5-ASA loaded chitosan–Ca–alginate microparticles: preparation and physicochemical characterization - K. Mladenovska, O. Cruaud, P. Richommed, E. Belamie, R. S. Raicki, M.-C. Venier- Julienne, E. Popovski, J. P. Benoit, K. Goracinova (My University, 2007)