1. The immunological measurement of pregnant mare serum gonadotrophin;Allen;J. Endocrinol.,1969
2. The influence of fetal genotype upon endometrial cup development and PMSG and progestagen production in equids;Allen;J. Reprod. Fert., Suppl.,1975
3. Immunological aspects of the equine endometrial cup reaction and the effect of xenogeneic pregnancy in horses and donkeys;Allen;J. Reprod. Fert., Suppl.,1982
4. The origin of the equine endometrial cups. I. Production of PMSG by fetal trophoblast cells;Allen;J. Reprod. Fert.,1972