Widjijono, Widjijono, Purwanto Agustiono, and Dyah Irnawati. 2009. “Mechanical Properties of Carving Wax With Various Ca-Bentolite Filter Composition”. Dental Journal 42 (3):114-17. https://doi.org/10.20473/j.djmkg.v42.i3.p114-117.