Marsudi Tangguh Dwi Sasongko, and Rini Suwartika. “Design and Build Uno Android-Based Heart Rate Detector to Support First Aid Performance at PMI Kebumen Regency”. Jurnal E-Komtek (Elektro-Komputer-Teknik), Vol. 8, no. 2, Dec. 2024, pp. 528-37, doi:10.37339/e-komtek.v8i2.2184.