S. S. Mitic, S. B. Tosic, AL. N. Pavlovic, M. B. Stojkovic, M. N. Mitic, B. T. Stojanovic (2010). ALKALI AND ALKALINE EARTH METAL CONTENT OF EARLY SEASON VEGETABLES OF SOUTHERN SERBIAN REGIONS. 10th International Multidisciplinary Scientific GeoConference SGEM2010, 665-668.