Y. Naumenko, S. Repina, I. Khala, D. Manhasarov, and O. Nardid, “Activity and release of enzymes embedded in polyvinyl alcohol-based cryohydrogels under –20 °C storage conditions ”, Probl Cryobiol Cryomed, vol. 36, no. 1, pp. 69–72, May 2026.