1. Fluctuations in the plasma levels of the follicle-stimulating-hormone during oestrous cycle, anoestrus, gestation and lactation in the ewe: evidence for an endogenous rhythm of FSH release;Bister;Theriogenology,1983
2. Increased ovulation rate in ewes by a single melatonin injection;Bister;Arch. Int. Physiol. Biochim.,1991
3. The distribution of melatonin binding sites in neuroendocrine tissues of the ewe;Bittman;Biol. Reprod.,1990
4. Role of the pineal gland in ovine photoperiodism: regulation of seasonal breeding and negative feedback effects of estradiol upon luteinizing hormone secretion;Bittman;Endocrinology,1983
5. Chemineau, P., Terqui, M., 1986. Sensitivity of reproductive potential to environmental factors in sheep and goats. International Atomic Energy Agency, SR-115/25, pp. 75–89