Cvetanovska, Lenka, and Mirko Spasenoski. 2001. “Effect of Various Zinc Concentrations on Some Morphological Parameters at Tomato (Lycopersicon Esculentum Mill.)”. Macedonian Journal of Ecology and Environment 7 (1-2):61-66. http://mjee.org.mk/index.php/mjee/article/view/152.