1. Separation and delay of contents in the rabbit colon;Björnhag;Swedish J. agric. Res.,1972
2. The retrograde transport of fluid in the proximal colon of rabbits;Björnhag;Swedish J. agric. Res.,1981
3. Separation and retrograde transport in the large intestine of herbivores;Björnhag,1981
4. Selective retention of bacteria in the guinea pig hindgut;Björnhag,1983
5. Demonstration of coprophagy in some rodents;Björnhag;Swedish J. agric. Res.,1977