Parhusip, H., Nugroho, D., Purnomo, H. and Kawuryan, I. (2022) “MATHEMATICAL SILVER FOR ENTREPRENEURIAL MATHEMATICS”, BAREKENG: Jurnal Ilmu Matematika dan Terapan, 16(4), pp. 1175-1184. doi: 10.30598/barekengvol16iss4pp1175-1184.