Focaroli, Stefano, et al. “Effect of Hypoxia-Inducing Ions on Chondrogenic Differentiation in Adipose Derived Mesenchymal Stem Cells Within Alginate Matrix”. Italian Journal of Anatomy and Embryology, vol. 121, no. 1, Oct. 2017, p. 163, doi:10.36253/ijae-2301.