Keskin, M, S Gül, İ Karaaslan, and A Yakan. 2024. “Controlling the Photoperiod to Raise the Melatonin Content of Sheep Milk. Photoperiod Control and Milk Melatonin Content”. Journal of the Hellenic Veterinary Medical Society 74 (4):6641-48. https://doi.org/10.12681/jhvms.31879.