Ilham, Dirja Nur, Hardisal Hardisal, Balkhaya Balkhaya, Rudi Arif Candra, and Erwinsyah Sipahutar. 2019. “Heart Rate Monitoring and Stimulation With the Internet of Thing-Based (IoT) Alquran Recitation”. Sinkron : Jurnal Dan Penelitian Teknik Informatika 4 (1):221-25. https://doi.org/10.33395/sinkron.v4i1.10392.