Asmoro, W. A. . (2025) “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(2), pp. 63–70. doi: 10.12962/j20882033.v18i2.5936.