1. Equine Gonadotrophins;Allen,1970
2. The influence of fetal genotype upon endometrial cup development and PMSG and progestagen production in equids;Allen;Journal of Reproduction and Fertility Supplement,1975
3. The origin of equine endometrial cups. II. Invasion of the endometrium by trophoblast;Allen;Anatomical Record,1973
4. Immunological studies on feto-maternal relationships in equine pregnancy;Allen,1984
5. Expression of maternal immune responses to fetal antigens in equine pregnancy;Allen,1987