column
2020, 57(1): 3-16.
DOI: 10.7544/issn1000-1239.2020.20190233
2020, 57(1): 17-31.
DOI: 10.7544/issn1000-1239.2020.20190208
2020, 57(1): 32-52.
DOI: 10.7544/issn1000-1239.2020.20190239
2020, 57(1): 53-73.
DOI: 10.7544/issn1000-1239.2020.20190002
2020, 57(1): 74-84.
DOI: 10.7544/issn1000-1239.2020.20190519
2020, 57(1): 85-101.
DOI: 10.7544/issn1000-1239.2020.20190062
2020, 57(1): 102-123.
DOI: 10.7544/issn1000-1239.2020.20180675
2020, 57(1): 124-135.
DOI: 10.7544/issn1000-1239.2020.20190166
2020, 57(1): 136-144.
DOI: 10.7544/issn1000-1239.2020.20190204
2020, 57(1): 145-158.
DOI: 10.7544/issn1000-1239.2020.20190180
2020, 57(1): 159-174.
DOI: 10.7544/issn1000-1239.2020.20190042
2020, 57(1): 175-187.
DOI: 10.7544/issn1000-1239.2020.20180691
2020, 57(1): 188-201.
DOI: 10.7544/issn1000-1239.2020.20190079
2020, 57(1): 202-213.
DOI: 10.7544/issn1000-1239.2020.20180871
2020, 57(1): 227-239.
DOI: 10.7544/issn1000-1239.2020.20190026