Akbar I, Gautama E. Locating Identification the Nearest Social Security Organizing Agency for Health Recipient Hospital Using the Haversine Formula and Black Box Method . IJASRE [Internet]. 2023 Mar. 19 [cited 2024 Nov. 23];9(3):25-36. Available from: https://ijasre.net/index.php/ijasre/article/view/1656