Igić, D., M. Borišev, D. Vilotić, M. Šijačić-Nikolić, M. Ćuk, M. Ilić, and B. Kovačević. “Variability and Relationships Among Rooting Characteristics for White Poplar Hardwood Cuttings”. Archives of Biological Sciences, vol. 72, no. 2, July 2020, pp. 153-6, https://serbiosoc.org.rs/arch/index.php/abs/article/view/4996.