Gabariela Purnama Ningsi, and Sudi Mungkasi. “enerapan etode unge-utta an terasi ariasional alam imulasi ransmisi uberkulosis”. imits: ournal of athematics and ts pplications, vol. 16, no. 2, Dec. 2019, pp. 147-5, https://journal.its.ac.id/index.php/limits/article/view/5422.