Parhusip H, Nugroho D, Purnomo H, Kawuryan I. MATHEMATICAL SILVER FOR ENTREPRENEURIAL MATHEMATICS. BAREKENG: J. Math. & App. [Internet]. 15Dec.2022 [cited 6May2024];16(4):1175-84. Available from: https://ojs3.unpatti.ac.id/index.php/barekeng/article/view/5823