Saroyo, Pujo, and M.P.A Wibowo. “Determination of Transportation Fleet Size Using The Combination of Adjusted SPT Rule and Linear Programming Method”. KnE Life Sciences 3, no. 3 (January 1, 2016): 138-141. Accessed May 17, 2024. https://knepublishing.com/index.php/KnE-Life/article/view/384.