• https://scholar.korea.ac.kr/handle/2021.sw.korea/240531
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240532
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240533
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240534
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240535
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240536
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240537
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240538
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240539
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240540
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240541
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240542
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240543
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240544
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240545
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240546
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240547
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240548
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240549
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240550
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240551
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240552
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240553
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240554
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240555
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240556
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240557
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240558
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240559
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240560
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240561
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240562
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240563
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240564
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240565
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240566
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240567
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240568
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240569
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240570
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240571
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240572
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240573
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240574
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240575
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240576
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240577
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240578
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240579
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240580
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240581
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240881
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240882
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240883
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240884
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240885
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240886
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240887
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240888
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240889
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240890
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240891
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240892
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240893
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240894
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240895
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240896
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240897
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240898
• https://scholar.korea.ac.kr/handle/2021.sw.korea/240899
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242722
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242723
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242724
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242725
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242726
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242727
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242728
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242729
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242730
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242731
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242732
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242733
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242734
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242735
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242736
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242737
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242738
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242739
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242740
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242741
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242742
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242743
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242744
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242745
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242746
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242747
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242748
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242749
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242750
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242751
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242752
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242753
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242754
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242755
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242756
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242757
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242758
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242759
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242760
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242761
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242762
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242763
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242764
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242765
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242766
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242767
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242768
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242769
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242770
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242771
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242772
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242773
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242774
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242775
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242776
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242777
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242778
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242779
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242780
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242781
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242782
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242783
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242784
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242785
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242786
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242787
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242788
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242789
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242790
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242791
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242792
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242793
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242794
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242795
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242796
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242797
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242798
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242799
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242800
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242801
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242802
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242803
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242804
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242805
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242806
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242807
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242808
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242809
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242810
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242811
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242812
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242813
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242814
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242815
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242816
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242817
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242818
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242819
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242820
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242821
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242822
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242823
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242824
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242825
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242826
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242827
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242828
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242829
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242830
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242831
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242832
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242833
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242834
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242835
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242836
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242837
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242838
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242839
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242840
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242841
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242842
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242843
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242844
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242845
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242846
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242847
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242848
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242849
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242850
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242851
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242852
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242853
• https://scholar.korea.ac.kr/handle/2021.sw.korea/242854
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244012
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244013
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244014
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244015
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244016
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244017
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244018
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244019
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244020
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244021
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244022
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244023
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244024
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244025
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244026
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244027
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244028
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244029
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244030
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244031
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244032
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244033
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244034
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244035
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244036
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244037
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244038
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244039
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244040
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244041
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244042
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244043
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244044
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244045
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244046
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244047
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244048
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244049
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244050
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244051
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244052
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244053
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244054
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244055
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244056
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244057
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244058
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244059
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244060
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244061
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244062
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244063
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244064
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244065
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244066
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244067
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244068
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244069
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244070
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244071
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244072
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244073
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244074
• https://scholar.korea.ac.kr/handle/2021.sw.korea/244075
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251750
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251751
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251752
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251753
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251754
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251755
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251756
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251757
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251758
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251759
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251760
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251761
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251762
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251763
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251764
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251765
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251766
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251767
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251768
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251769
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251770
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251771
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251772
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251773
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251774
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251775
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251776
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251777
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251778
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251779
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251780
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251781
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251782
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251783
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251784
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251785
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251786
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251787
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251788
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251789
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251790
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251791
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251792
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251793
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251794
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251795
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251796
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251797
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251798
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251799
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251800
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251801
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251802
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251803
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251804
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251805
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251806
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251807
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251808
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251809
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251810
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251811
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251812
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251813
• https://scholar.korea.ac.kr/handle/2021.sw.korea/251814
• https://scholar.korea.a