Riansyah, Rayyan, Bryan Estavan Imanuel Sitanggang, and Mia Juliana. 2026. “Soft Time-Window Constraints in Crystal-Ice Distribution: A Cheapest-Insertion VRPTW Case Study With Non-Refrigerated Vehicles”. Sinergi International Journal of Logistics 4 (3). https://doi.org/10.61194/sijl.v4i3.1106.