Pylypenko, L., K. Kalatur, and J. Hallmann. “Sugar Beet Nematode Heterodera Schachtii Distribution and Harmfulness in Ukraine”. Agricultural Science and Practice 3, no. 3 (December 15, 2016): 3-11. Accessed December 4, 2021. https://agrisp.com/index.php/agrisp/article/view/83.