@article{033312281, title = "Seasonal changes in serum prolactin and testosterone concentrations and in testicular luteinizing hormone receptor mRNA expression in the male black bear", author = "Howell Skalla, L. and Nelson, R.A. and Bahr, J.M.", year = "1997", journal = "Biology of Reproduction", volume = "56", number = "Suppl 1", pages = "105", issn = "0006-3363", url = "https://eurekamag.com/research/033/312/033312281.php" }