Zinal N, Ahmad Yusof AH, Mahadzir CA, Abd Razak MS. Pengesan Degupan Jantung Menggunakan Sistem GPS dan NodeMCU. MARI [Internet]. 2021 May 24 [cited 2024 Aug. 17];2(2):101–107. Available from: https://publisher.uthm.edu.my/periodicals/index.php/mari/article/view/1896