1. British Veterinary Association/The Kennel Club, 1991. BVA/KC hip dysplasia scoring scheme. Vet. Rec. 19, 63–63.
2. Cameron, N.D., 1997. Selection Indices and Prediction of Genetic Merit in Animal Breeding. CAB International, Wallingford, UK.
3. Dean, A.G., Dean, J.A., Coulombier, D., Brendel, K.A., Smith, D.C., Burton, A.J., Dicker, R.C., Sullivan, K., Fagan, R.F., Arner, T.G., 1994. Epi Info, Version 6: A Word Processing, Database, and Statistics Program for Epidemiology on Microcomputers. Centres for Disease Control and Prevention, Atlanta, GA.
4. A scheme to control hip dysplasia;Dennis;Vet. Nursing,1998
5. Falconer, D.S., 1989. Introduction to Quantitative Genetics, 3rd Edition. Longman, London.