Aldi Nugroho Nugroho. “Integrated Process Design and Economic Evaluation of Waste-to-Biomaterial Conversion: Hydroxyapatite Production from Blue Crab Shells Using Aspen Plus”. IPTEK The Journal of Engineering 11, no. 3 (February 27, 2026). Accessed April 26, 2026. https://journal.its.ac.id/index.php/joe/article/view/7980.