Hristovski, Slavčo, Ljupčo Melovski, Marjana Šušlevska, and Ljupčo Grupče. 2009. “Belowground Phytomass and Production in the Beech Ecosystem Calamintho Grandiflorae-Fagetum in Mavrovo National Park. V. Belowground Production in the Tree and Shrub Layers”. Macedonian Journal of Ecology and Environment 12 (1-2):9-20. https://mjee.org.mk/index.php/mjee/article/view/87.