Firmanto, D. H. ., E. Prasetyo, and M. N. . Hamidah. “Instant Cement Forming Using Holt-Winter (case Study: CV Trijaya Abadi)”. JEECS (Journal of Electrical Engineering and Computer Sciences), vol. 3, no. 1, June 2018, pp. 389-94, doi:10.54732/jeecs.v3i1.145.