Asmoro, Wiratno A. “The Determination of Acoustical Absorbing Materials in The “Al-Marwah” Room of ‘Al-Akbar’ Mosque in Surabaya Using Objective Parameters Approximation”. IPTEK The Journal for Technology and Science 18, no. 2 (June 30, 2025): 63–70. Accessed January 30, 2026. https://journal.its.ac.id/index.php/jts/article/view/5936.