- Number of journal: 12-2020
- DOI: https://doi.org/10.31659/0044-4472-2020-12
- Number of journal: 11-2020
- DOI: https://doi.org/10.31659/0044-4472-2020-11
- Number of journal: 10-2020
- DOI: https://doi.org/10.31659/0044-4472-2020-10
- Number of journal: 9-2020
- DOI: https://doi.org/10.31659/0044-4472-2020-9
- Number of journal: 8-2020
- DOI: https://doi.org/10.31659/0044-4472-2020-8
- Number of journal: 7-2020
- DOI: https://doi.org/10.31659/0044-4472-2020-7
- Number of journal: 6-2020
- DOI: https://doi.org/10.31659/0044-4472-2020-6
- Number of journal: 4-5-2020
- DOI: https://doi.org/10.31659/0044-4472-2020-4-5
- Number of journal: 3-2020
- DOI: https://doi.org/10.31659/0044-4472-2020-3
- Number of journal: 1-2-2020
- DOI: https://doi.org/10.31659/0044-4472-2020-1-2