V. O. Litovchenko, D. D. Bitchuk, F. E. Abdallah, and V. V. Grigoruk, “Study of fetal bone tissue and preparation "Fetotek" effects on osteoregeneration course in diaphyseal fractures”, Probl Cryobiol Cryomed, vol. 15, no. 3, pp. 443–445, Sep. 2005.