White, M.E. and others, 1986. Milk progesterone concentrations following simultaneous administration of buserelin and cloprostenol in cattle with normal corporal lutea. Canadian Journal of Veterinary Research, 50 (2), 285–286; Dinsmore, R.P. and others, 1989. Effect of gonadotropin-releasing hormone on clinical response and fertility in cows with cystyic ovaries, as related to milk progesterone concentration and days after partarition. Journal of the American Veterinary Medical Association, 195 (3), 327–330.
