Carvalho M. R., Daniela L., Reis R. L., Correlo V. M., and Oliveira J. M.,  "Evaluating Biomaterial-and Microfluidic-Based 3D Tumor Models",  Trends in Biotechnology, vol. 33, issue 11, pp. 667?678, doi:10.1016/j.tibtech.2015.09.009, 2015.