Rolf Erik Kristoffersson

1928

• A comparative long-term study of hibernation in Finnish and German hedgehogs in a constant ambient temperature
• Free amino acids in blood of hibernating and non-hibernating hedgehogs and golden hamsters, and in common frogs acclimated to different ambient temperatures
• Glutamic decarboxylase activity in the brains of hibernating and non-hibernating golden hamsters and hedgehogs
• Hibernation of the hedgehog (Erinaceus Europaeus)
• Studies on the physiology of the hibernating hedgehog. 9
• The distribution of free amino acids in the brain tissue of non-hibernating and hibernating hedgehogs (Erinaceus europaeus L.)
• The endogenous respiration and urea production of liver tissue slices from hibernating and non-hibernating hedgehogs and from common frogs acclimated to different ambient temperatures