Krasnobaeva, Irina, Nadezhda Kovalenko, and Elza Popova. “The Effect of Chitin on the Biological Activity of Bacillus Subtilis Strains”. Plant Protection News (Vestnik Zashchity Rasteniy) 103, no. 4 (December 25, 2020). Accessed April 30, 2025. https://www.plantprotect.ru/index.php/vizr/article/view/13272.