1. Aliev, D.A., Guliev, N. M. (1990): Karboangidraza rastenij. Nauka, Moscow;
2. Carol, M.D., Loneragan J. F. (1969): Response of Plant Species to Concentration of Zinc in Solution. II Rate of Zinc Absorption and Their Relation to Growth. Austrl. J. Agric. Res. 20, 457-163;
3. Kastori, R. (1990): Necessary Micronutrients: Physiological Role and Importance in the Plant Protection. Scientific Book, Belgrade;
4. Kastori, R., Petrović, N.(1993): Influence of Heavy Metals on Plants. Heavy Metals and Pesticides on Plants. Faculty of Agriculture, Novi Sad, 55-73;
5. Krstić, B., Stanković, D., Nikolić, N. 2008: Effect of Traffic on the Concentrations OF Phs in NP "Fruška Gora" Journal of "Biotechnology & Biotechnological Equipment" Sofia, Bulgaria;