1. Observations on the changes in behavioural activities of dairy cows prior to and after parturition;Bao;Irish Vet. J.,1991
2. Prediction and improved estimation in linear models;Bibby,1977
3. Herbage growth and utilization under continuous stocking management;Bircham,1981
4. The automatic recording of animal behaviour in the field;Canaway,1955
5. A remote monitor for animal behaviour using radio telemetry;Coulter,1988