Widiyanti, P. and Siswanto, S. 2012. Physical characteristic of brown algae (Phaeophyta) from madura strait as irreversible hydrocolloid impression material. Dental Journal. 45, 3 (Sep. 2012), 177–180. DOI:https://doi.org/10.20473/j.djmkg.v45.i3.p177-180.