1. Almond GW: Clinical examination of female reproductive organs. In: Youngquist RS (Ed.): Current Therapy in Large Animal Theriogenology, W.B. Saunders Company, 1997, 697–703.
2. Almond GW: Factors affecting the reproductive performance of the weaned sow. In: Tubbs RC, Leman AD (Ed.): The Veterinary Clinics of North America, Swine Reproduction, 1992, 8, 503–515.
3. Almond GW, Friendship RM, Bosu WTK: Autumn abortions in sows. Can. Vet. J. 1985, 26, 162–163.
4. Bassett JM, Bray CJ, Sharpe CE: Summer infertility in outdoor sows: Lessons from studies on ‘seasonally barren’ sows. The Pig Journal, 1996, 36, 65–84.
5. Bazer FW, Thatcher WW, Martinat-Botte F, Terqui M: Sexual maturation and morphological development of the reproductive tract in Large White and prolific Chinese Meishan pigs. J. Reprod. Fert. 1988, 83, 723–728.