W. K. Cheng, I. M. Khairuddin, A. P.P. Abdul Majeed, and M. A. Mohd Razman, “The Classification of Heart Murmurs: The Identification of Significant Time Domain Features”, Mekatronika : J. Intell. Manuf. Mechatron., vol. 2, no. 2, pp. 36–43, Dec. 2020, doi: 10.15282/mekatronika.v2i2.6748.