Yusim, Adi Kurniawan, et al. “Improvement Process for Plate Heat Exchanger Type of M15 at PT. Janata Marina Indah (JMI) Semarang”. Zona Laut Jurnal Inovasi Sains Dan Teknologi Kelautan, vol. 1, no. 1, Mar. 2020, pp. 6-10, doi:10.62012/zl.v1i1.9651.