Yedi Alsantani, Syarifah Aini, and Kms M. Wahyu Hidayat. “IO-Based Heart Rate And Blood Oxygen Measurement Monitoring System”. JURNAL TEKNOLOGI DAN OPEN SOURCE, Vol. 9, no. 1, June 2026, pp. 56 -3, doi:10.36378/jtos.v9i1.5302.