1. Calving behaviour of single-suckled Angus cows and their calves born in the spring;Aitken,1982
2. Naturalistic studies of maternal care in moose and elk;Altmann,1963
3. Some observations on the behavior of parturient farm animals with particular reference to cattle;Arthur;Vet. Rev.,1961
4. Behaviour of free-keeping cattle in conditions of boreal forest;Baskin,1993
5. The behaviour of dairy cows and their newborn calves in individual or group housing;Edwards;Appl. Anim. Ethol.,1983