Mochammad Tutuk Safirin, Mega Islami, Rizqi Sari, Sinta Dewi, and Enny Aryanny. 2023. “Mental Workload Analysis of Workers Using the Swedish Occupational Fatigue Index (SOFI) Method at A Job Shop, Sheet Metal, And Pipe Metal Manufacturing Company in Surabaya”. Technium: Romanian Journal of Applied Sciences and Technology 16 (1). Constanta, Romania:411-16. https://doi.org/10.47577/technium.v16i.10020.