Egli M, Bertram R, Sellix MT, Freeman ME. (2004). Rhythmic secretion of prolactin in rats: action of oxytocin coordinated by vasoactive intestinal polypeptide of suprachiasmatic nucleus origin. Endocrinology. 145 [PubMed]
Egli M et al. (2006). Prolactin secretory rhythm of mated rats induced by a single injection of oxytocin. American journal of physiology. Endocrinology and metabolism. 290 [PubMed]