For citations:
Volkova M.A., Chvala I.A., Osipova O.S., Kulagina M.A., Andreychuk D.B., Chvala I.A. Serological monitoring of avian influenza and Newcastle disease in the Russian Federation in 2019. Veterinary Science Today. 2020;(2):76-82. https://doi.org/10.29326/2304-196X-2020-2-33-76-82