Igić, Dušan, Milan Borišev, Dragica Vilotić, Mirjana Šijačić-Nikolić, Mirjana Ćuk, Miloš Ilić, and Branislav Kovačević. 2020. “Variability and Relationships Among Rooting Characteristics for White Poplar Hardwood Cuttings”. Archives of Biological Sciences 72 (2):153-63. https://www.serbiosoc.org.rs/arch/index.php/abs/article/view/4996.