1. A history of farm animal embryo transfer and some associated techniques;Betteridge;Anim Reprod Sci,2003
2. Oocyte transfer and gamete intrafallopian transfer in the mare;Carnevale;Anim Reprod Sci,2004
3. Immunological aspects of the endometrial cup reaction and the effect of xenogeneic pregnancy in horses and donkeys;Allen;J Reprod Fertil Suppl,1982
4. Between-species transfer of horse and donkey embryos: a valuable research tool;Allen;Equine Vet J,1985
5. Extraspecific donkey-in-horse pregnancy as a model of early fetal death;Allen;J Reprod Fertil Suppl,1987