Hofmann, N., I. Bernemann, D. Pogozhykh, and B. Glasmacher. “Development of Systematic Parameter Optimization for Cryopreservation Protocols for Cellular Suspensions”. Problems of Cryobiology and Cryomedicine, vol. 21, no. 4, Dec. 2011, pp. 353-64, http://cryo.org.ua/journal/index.php/probl-cryobiol-cryomed/article/view/107.