van Uden S., Silva-Correia J., Correlo V. M., Oliveira J. M., and Reis R. L.,  "Biological Characterization of Rabbit Nucleus Pulposus Cells on a Biphasic Scaffold Made of Polycaprolactone and Methacrylated Gellan Gum Hydrogel",  Journal of Tissue Engineering and Regenerative Medicine, vol. 7, issue s1, pp. 6-52, doi:10.1002/term.1822, 2013.