Celka, Zbigniew, Maria Drapikowska, Katarzyna Ogrodowicz, Myroslav V. Shevera, and Piotr Szkudlarz. “Differentiation of Petals in the Malva Alcea L. Populations from the Region of Central and Eastern Europe”. Biodiversity: Research and Conservation, no. 5-8 (December 30, 2007): 17–24. Accessed January 8, 2025. https://pressto.amu.edu.pl/index.php/biorc/article/view/42832.