Elaboration and characterization of dental plasters obtained from a Moroccan gypsum M.A. El Kanouni, B. Aazzab, L. Tricha, A. Samdi, R. Moussa, J. Hamel et M. Gomina J. Phys. IV France, 123 (2005) 245-249 DOI: 10.1051/jp4:2005123044