1. Armitage, P. and Berry, G., 1987.Statistical Methods in Medical Research, 2nd edn, (Blackwell, Oxford)
2. Bramlage, L.R., Schneider, R.K. and Gabel, A.A., 1988. A clinical perspective on lameness originating in the carpus.Equine Veterinary Journal, supplement 6, 12–18
3. Dolvik, N.I. and Klemetsdal, G., 1994. Arthritis in the carpal joint of Norwegian trotter — heritability, effects of inbreeding and conformation.Livestock Production Science, in press
4. Gonsholt, H. and Austboe, D., 1993. Results from analyses of hay in Norway, with special reference to energy, protein and mineral content.Proceedings of the International Conference on Horse Breeding and Production in Cold Climatic Regions, Reykjavik, 1993, (European Association for Animal Production, Iceland)
5. Hosmer, D.W. and Lemeshow, S., 1989.Applied Logistic Regression, (Wiley, New York)