Nadiya Garnis Sallyfan, Endro Yulianto, and Torib Hamzah. “Peak Flow Meter Equipped With Inspection Results Indicator”. Journal of Electronics, Electromedical Engineering, and Medical Informatics, Vol. 2, no. 1, Jan. 2020, pp. 7-12, doi:10.35882/jeeemi.v2i1.2.