1. The effect of psychopharmacological prolactin releasers on lactation in sheep;Bass;Arch. Int. Pharmacodyn. Ther.,1974
2. Current state of the use of sheep for milk in the Cracow region based on studies performed at the Department of Sheep and Goat Breeding of the Agricultural University in Cracow (in Polish);Ciuryk,1999
3. Seasonal prolactin secretion and its role in seasonal reproduction, a review;Curlewis;Reprod. Fertil. Dev.,1992
4. Photoperiodic effects on dairy cattle: a review;Dahl;J. Dairy Sci.,2000
5. Direct radioimmunoassay for plasma melatonin;Fraser;Clin. Chem.,1983