N. F. Pujo Leksonowati, N. Pamungkas, M. M. Manurung, N. H. Batubara, and H. Widiastuti, “Experimental study: coolant viscosity’s impact on Inconel 600’s surface roughness measured using a refractometer”, JEATech, vol. 5, no. 1, pp. 24–36, Apr. 2024.