1. Issue 1 (35) DOI: 10.33075/2220-5861-2019-1 (18.03.2019)
2. Issue 2 (36) DOI: 10.33075/2220-5861-2019-2 (21.06.2019)
3. Issue 3 (37) DOI: 10.33075/2220-5861-2019-3 (23.09.2019)
4. Issue 4 (38) DOI: 10.33075/2220-5861-2019-4 (20.12.2019)
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