Shahadi, Haider Ismael, et al. “Design and Implementation of a Smart, Interactive and Portable System for Monitoring of Human Vital Signs”. Jurnal Ilmiah Teknik Elektro Komputer Dan Informatika, vol. 7, no. 1, Apr. 2021, pp. 30-42, doi:10.26555/jiteki.v7i1.20209.