1. Djurić, D., Kerin, Ž.: Some considerations on lead content in soil and plants. Symposium on Human Ecology, Prague, 13 October 1970 (to be published).
2. Djurić, D., Kerin, Ž., Graovac-Leposavić, Lj., Novak, Lj., Kop, M.: Environmental contamination by lead from a mine and smelter. A preliminary report. Arch. environm. Hlth 23, 275 (1971).
3. Jaworowski, Z.: Stable and radioactive lead in environment and human body. Warsaw: Nuclear Information Center Publication 1967.
4. Kerin, Ž.: Bestimmung von Mikromengen Blei in pflanzlichem Material. Mikrochmioa Acta 5, 927 (1968).
5. Monography: 300 Let Mežiški Rudniki. Mežica 1965.