Nikolova, Ivelina M., and Viliana M. Vasileva. “Effect of Alfalfa Cultivation on the Damage by Otiorhynchus Ligustici Linnaeus (Coleoptera, Curculionidae)”. Journal of BioScience and Biotechnology, vol. 10, no. 2, Dec. 2021, pp. 129-35, https://editorial.uni-plovdiv.bg/index.php/JBB/article/view/392.