Dimitrov, A. Y., T. G. Dubrava, and A. N. Goltsev. “Analysis of IDO-Dependent Immunomodulatory Effect of Mice Fetal Liver Mesenchymal Stem Cells Prior to and After Cryopreservation”. Problems of Cryobiology and Cryomedicine, vol. 24, no. 2, June 2014, p. 184, doi:10.15407/cryo24.02.184.