MENSI, F.; KSOURI, J.; SEALE, E.; ROMDHANE, M. S. Optimizing R-Phycoerythrin Purification from the Red Algae Gracilaria Verrucosa in Polymer-Salt Aqueous Two-Phase System Using Response Surface Methodology. Bull. Inst. Natl. Sci. Technol. Mer 2014, 41, 63-76.