Passamai, V. E., S. Katz, V. Alvarez, and G. R. Castro. “Bio-Inks for 3D Extrusion-Based Bio-Printed Scaffolds: Printability Assessment”. International Journal of Advances in Medical Biotechnology - IJAMB, vol. 2, no. 1, Mar. 2019, pp. 43-45, doi:10.25061/2595-3931/IJAMB/2019.v2i1.43.