HWAI ING, Soon; JAMIN, Nur Fatihah; KARUNANITI, Thilaka; AZMAN, Nurfatihah; ZHI JIAN, Low; MOHAMMAD, Nur Farahiyah; MOHD NASIR, Nashrul Fazli. Development of Portable Oxygen Concentrator Device for COVID-19 Patient. Multidisciplinary Applied Research and Innovation, [S. l.], v. 2, n. 3, p. 220–223, 2021. Disponível em: https://penerbit.uthm.edu.my/periodicals/index.php/mari/article/view/5105. Acesso em: 9 apr. 2026.