Maesyaroh, Uhty, Laelatul Munawaroh, Heni Sumarti, and Rico Adrial. 2021. “Analysis of Chest X-Ray (CXR) Images in COVID-19 Patients Based on Age Using the Otsu Thresholding Segmentation Method”. Journal of Natural Sciences and Mathematics Research 7 (2):59-65. https://journal.walisongo.ac.id/index.php/JNSMR/article/view/10891.