Haron, Zaiton, Euniza Jusli, Hasanan Md Nor, Ramadhansyah Putra Jaya, Haryati Yaacob, Khairulzan Yahya, Azman Mohamad, and Musli Nizam Yahya. 2018. “Prediction of Sound Absorption Coefficient for Double Layer Rubberised Concrete Blocks”. International Journal of Engineering & Technology 7 (2.29): 704-10. https://doi.org/10.14419/ijet.v7i2.29.14002.