Agustian, G., Y. A, and I. Irzal. “Comparison of Accuracy in Cutting Dental Profiles Between Differential Methods Approach Upward With a Lower Approach to Making Straight Gear Wheels”. Teknomekanik, vol. 1, no. 2, Dec. 2018, pp. 32-37, doi:10.24036/tm.v2i2.1672.