Nardid, Oleg A., Ekaterina D. Rozanova, Yana O. Cherkashina, Svetlana V. Repina, и Eduard O. Nardid. 2014. «Effect of Storage of Placenta Tissue at –20°C on Properties of Its Aqueous and Saline Extracts». Проблемы криобиологии и криомедицины 24 (1):28-37. https://doi.org/10.15407/cryo24.01.028.