1. The immunological measurement of pregnant mare serum gonadotrophin;Allen;J. Endocrin.,1969
2. Factors influencing pregnant mare serum gonadotrophin production;Allen;Nature, Lond.,1969
3. Endocrinology of early pregnancy in the mare;Allen;Equine Vet. J.,1970
4. The influence of foetal genotype upon endometrial cup development and PMSG and progestagen production in equids;Allen;J. Reprod. Fert. (Suppl).,1975
5. The origin of the endometrial cups. 1. Production of PMSG by fetal trophoblast cells;Allen;J. Reprod. Fert.,1972