Mezhevikina, L. M., D. A. Reshetnikov, M. G. Fomkina, and E. E. Fesenko. “Ultrathin Polyethyleneimine (PEI) Films for Culturing of the Human Mesenchymal Stromal Cells (hMSCs)”. Journal of Cardiovascular Medicine and Cardiology, vol. 7, no. 3, Aug. 2020, pp. 255-61, doi:10.17352/2455-2976.000148.