Y. J. Zhang, Y. X. Yang, M. Y. Hu, Q. K. Ni, H. G. Li, and Z. C. Miao, “Importance of CD44 on umbilical cord mesenchymal stem cells for expansion of hematopoietic cells”, Cell Mol Biol (Noisy-le-grand), vol. 61, no. 2, pp. 18–25, May 2015.