Quraishi S., Martins M., Barros, A. A., GuriKov P., Raman S. P., Smirnova I., Duarte A. R. C., and Reis R. L.,  "Novel non-cytotoxic alginate?lignin hybrid aerogels as scaffolds for tissue engineering",  The Journal of Supercritical Fluids, vol. 105, pp. 1-8, doi:10.1016/j.supflu.2014.12.026, 2015.