1. Factors involved in the ejection of milk;Ely;J. Dairy Sci.,1941
2. Oxytocin in lactating cows and goats;Hawker;Brit. Vet. J.,1957
3. Blood oxytocin levels in the cow during milking and in the parturient goat;Knaggs;J. Endocrinol.,1963
4. Oxytoein concentration in bovine blood plasma during normal milkings;Prichard;J. Dairy Sci., (Abstr.),1966
5. Van Dongen, C. G. 1964. A bioassay for oxytocic activity in biological fluids and its use in certain phases of reproductive physiology. Ph.D. Thesis, University of Illinois, Urbana.