González Hernández, Yanela, and René W. Fischer. “Serum-Free Culturing of Mammalian Cells - Adaptation to and Cryopreservation in Fully Defined Media”. ALTEX - Alternatives to Animal Experimentation, vol. 24, no. 2, May 2007, pp. 110-6, doi:10.14573/altex.2007.2.110.