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Siemieniuch, Marta J., Ewelina Jursza, Anna Z. Szostek, Dariusz J. Skarzynski, Alois Boos, a Mariusz P. Kowalewski. Steroidogenic Capacity of the Placenta As a Supplemental Source of Progesterone During Pregnancy in Domestic Cats. BioMed Central, 2012.

Siemieniuch, Marta J., et al. Steroidogenic Capacity of the Placenta As a Supplemental Source of Progesterone During Pregnancy in Domestic Cats. BioMed Central, 2012.