Widiyanti, Prihartini, and Siswanto Siswanto. 2012. “Physical Characteristic of Brown Algae (Phaeophyta) from Madura Strait As Irreversible Hydrocolloid Impression Material”. Dental Journal 45 (3):177-80. https://doi.org/10.20473/j.djmkg.v45.i3.p177-180.