1. Proceedings of the First International Symposium on Balkan Flora and Vegetation 1973 1975 Man as a factor in the vegetational history of the Balkan Peninsula
2. CITED INDIRECTLY
3. BOTTEMA, S, PROCEEDINGS OF THE PREHISTORIC SOCIETY 33: 26 (1967).
4. THESIS U GRONINGEN 1974
5. Prehistoric Investigations in Iraqi Kurdistan 1960