1. Trends in productivity of sows during the last 10 years in France;Noguera;Pig News and Information,1984
2. Rates of genetic change in farm livestock;Smith;J. Agric. Res. Dev.,1984
3. The Chinese prolific breeds of pigs: examples of extreme genetic stocks;Sellier,1986
4. Potential of Chinese pig breeds to improve pork production efficiency in the USA;McLaren;Anim. Breed. Abstr.,1990
5. Selection of breeds, strains and individual pigs for prolificacy;Legault;J. Reprod. Fertil.,1985