Bangun, P. B. J., S. Octarina, S. P. Sepriliani, L. Hanum, and E. S. cahyono. “3-Phase Matheuristic Model in Two-Dimensional Cutting Stock Problem of Triangular Shape Items”. Science and Technology Indonesia, vol. 5, no. 1, Jan. 2020, pp. 23-27, doi:10.26554/sti.2020.5.1.23-27.