Tokhtar, Valeriy K., Andrey Yu. Kurskoy, Victoria N. Zelenkova, Liudmila A. Tokhtar, and Tatiana V. Petrunova. “Invasive Fraction Flora Analysis in the Southwest of the Central Russian Upland”. Amazonia Investiga 7, no. 17 (September 25, 2019): 2018–12. Accessed July 3, 2024. https://amazoniainvestiga.info/index.php/amazonia/article/view/766.