Molla, Ibrahim Ibrahim, and Emiliya Velizarova. 2017. “Investigation of Post-Fire Natural Regeneration in Forest Plantations of Pinus Sylvestris and Larix Decidua on the Northern Slopes of Rila Mountain”. Journal of BioScience and Biotechnology 5 (3):237-40. https://editorial.uni-plovdiv.bg/index.php/JBB/article/view/63.