KOSTAKIS, C., T. ANAGNOSTOU, I. SAVVAS, C. VERVERIDIS, и A. KOURELIS. «The Effect of Progesterone on the Anesthetic and Analgesic Requirements for Ovariohysterectomy in the Dog». Journal of the Hellenic Veterinary Medical Society, т. 70, вып. 3, октябрь 2019 г., сс. 1717-26, doi:10.12681/jhvms.21798.