Olszewska-Kaczyńska, Irena, and Henryk Chmiel. “Characteristics and Distribution of Pigments in Flowers of the New Interspecific Hybrid”. Acta Scientiarum Polonorum Hortorum Cultus 1, no. 2 (December 31, 2002): 17–24. Accessed April 25, 2024. https://czasopisma.up.lublin.pl/index.php/asphc/article/view/4872.