1. The Booroola Merino;ALLISON,1982
2. Segregation of a major gene influencing fecundity in progeny of Booroola sheep
3. HINCH, G.N., KELLY, R.W., OWENS, J.L. and CROSBIE, S.F., (1983). Proceedings of the New Zealand Society of Animal Production (in press)
4. Studies in ovine fertility in agricultural regions of Western Australia : ovulation rate, fertility and lambing performance
5. Genstat Manual;NELDER,1977