Hafsarah Maharrani, Ratih, and Oman Somantri. 2020. “Grouping Industrial Class Placement Selection for Students Using Multi-Objective Optimization on the Basis of Ratio Analysis”. Jurnal RESTI (Rekayasa Sistem Dan Teknologi Informasi) 4 (2), 237 -42. https://doi.org/10.29207/resti.v4i2.1532.