Subrata, G., Z. Hasratiningsih, E. Kurnikasari, and T. Dirgantara. “Evaluation of Seat and Non-Seat Post Preparation Design Using Conventional and Computational Methods”. Dental Journal, vol. 42, no. 4, Dec. 2009, pp. 179-84, doi:10.20473/j.djmkg.v42.i4.p179-184.