Aytasheva, Z., A. Nurzhanova, M. Ermekova, S. Kalugin, and Q. Tagaev. 2012. “Organochloride Pesticides and University Pumpkin Germplasm in Kazakhstan”. International Journal of Biology and Chemistry, no. 4 (December):13-17. https://ijbch.kaznu.kz/index.php/kaznu/article/view/59.