palupi, irma. “Implicit Boundary Integral Method for Homogeneous Hele-Shaw Problem With Multi-Connected Domain”. Indonesia Journal on Computing (Indo-JC) 4, no. 1 (March 22, 2019): 93-108. Accessed April 20, 2024. https://socj.telkomuniversity.ac.id/ojs/index.php/indojc/article/view/279.