1. Selection for early puberty and increased fertility at first mating;Baker,1982
2. Contrôle de performances et analyse de la variabilité génétique chez les ovins;Benyoucef,1977
3. Selection for litter size;Bradford,1985
4. Economic importance of the reproductive results in flocks of the Ebro Valley;Castellano,1986
5. Genetic parameters of date lambing in ‘DLS’ sheep;Fahmy,1980