Gabariela Purnama Ningsi, and Sudi Mungkasi. 2019. “enerapan etode unge-utta an terasi ariasional alam imulasi ransmisi uberkulosis”. imits: ournal of athematics and ts pplications 16 (2):147-57. https://journal.its.ac.id/index.php/limits/article/view/5422.