ROHMAN, A. F.; MAK’RUF, M. R.; TRIWIYANTO, T.; LAMIDI, L.; HUYNH, P.-H. Analysis of the Effectiveness of Using Digital Filters in Electronic Stethoscopes. Journal of Electronics, Electromedical Engineering, and Medical Informatics, v. 4, n. 4, p. 229-234, 29 Oct. 2022.