M, Shariatzadeh, et al. “Stiffness of Cell Micro-Environment Guides Long Term Cell Growth in Cell Seeded Collagen Microspheres”. Archives of Clinical and Biomedical Research, vol. 2, no. 5, Jan. 2018, pp. 167-82, https://fortunejournals.org/ojs/index.php/acbr/article/view/14724.