1. Study on the fertility and reproductive efficiency of Awassi ewe lambs and determination of puberty by vaginal smears;Al-Wahab;World Rev. Anim. Prod.,1981
2. Analysis of production records from a low land sheep flock. 4. Factors influencing the incidence of successful pregnancy in young females;Bichard;Anim. Prod.,1974
3. Maximum Likelihood from incomplete data via the EM algorithm;Dempster;J. R. Stat. Soc.,1977
4. Studies on the attainment of puberty and reproductive performance in Clun Forest ewe and ram lambs;Dyrmundsson,1972
5. Puberty and early reproductive performance in sheep. I. Ewe lambs;Dyrmundsson;Anim. Breed. Abstr.,1973