1. Althoff, J., Mohr,U., Page,N.: The Carcinogenic effect of di-butyl-nitrosamine in European hamsters (Cricetus cricetus L.). J. nat. Cancer Inst. (in press)
2. Kayser,Ch.: The physiology of natural hibernation. In: International Series of Monographs on Pure and Applied Biology. Modern Trends in Physiological Sciences. Oxford-New York-London-Philadelphia: Pergamon Press 1950
3. Mohr,U., Althoff,J., Page,N.: Tumors of the respiratory system induced in common European hamsters by N-diethylnitrosamine. J. nat. Cancer Inst. 49, 595 (1972)
4. Mohr,U., Althoff,J.: European Hamters (Cricetus cricetus L.) as a model for respiratory carcinogenesis. Address on the Vth Quadrennial Conference on Cancer in Perugia, Italy (1973)
5. Raths,P.: Mineralhaushalt und hormonale Aktivität im Winterschlaf. Experientia (Basel) 20, 179 (1964)