1. Die natürlichen Wälder und Gehölzfluren Irans;Bobek;Bonner Geograph. Abhandl.,1951
2. Environment and Archeology;Butzer,1965
3. The Native Vegetation and its Ecology in the Khuzistan River Basins;Pabot,1960
4. Preliminary pollen studies at Lake Zeribar, Zagros Mountains, southwestern Iran;Van Zeist;Science,1963
5. Pleistocene glaciation in Kurdistan;Wright;Eiszeitalter Gegenwart,1961