1. : Malakozoologie: Grundriss der Weichtierkunde, Gustav Fischer, Stuttgart, 1974, p. 1, 39.
2. in (Ed.): The Earth Sciences:Problems and Progress in Current Research, Chicago Press, Chicago, 1963, p. 137.
3. in (Ed.): Barobiology and the Experimental Biology of the Deep Sea, University of North Carolina Press, Chapel Hill, 1973, p. 19.
4. in (Ed.): First European Symposium on Bone and Teeth, Pergamon Press, Oxford, 1964, p. 269.