Zhekova, Evgeniya. “Diameter of the Root Neck and Number of Green Stems in Alfalfa Plants Damaged by the Larvae of Alfalfa Longhorn Beetle (Plagionotus Floralis Pall.: Coleoptera, Cerambycidae)”. Bulgarian Journal of Crop Science, vol. 56, no. 1, Feb. 2019, pp. 47-52, https://agriacad.eu/ojs/index.php/bjcs/article/view/2583.