Том. 3 No. 56 pp. 57-64 (2020)
URL: https://niva-volga.ru/ru/arkhiv-vypuskov-zhurnala/vypusk-2020/zhurnal-2020/2020…
DOI: https:// doi.org/10.36461/NP.2020.56.3.017
Том. 3 No. 71 pp. 72-77 (2020)
URL: https://library.anau.am/images/stories/grqer/agro-tex/2020-3/sargsyan_navasardy…
DOI: https://library.anau.am/images/stories/grqer/agro-tex/2020-3/sargsyan_navasardy…
