Ljubenova M. Above-ground energy reserves and annual accumulation of energy in shrub and herb layers in ass. Quercus frainetto+Quercus cerris - Festuca heterophylla+Poa nemoralis in the Vakarel mountains. MJEE [Internet]. 1994Aug.31 [cited 2024Jul.3];2(1):29-35. Available from: http://mjee.org.mk/index.php/mjee/article/view/12