2026. Design and Development of a Power-Free Smart Cooler Box Using Phase Change Materials for Last-Mile Cold Chain Logistics. Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri. 28, 1 (Mar. 2026), 13–23. DOI:https://doi.org/10.9744/jti.28.1.13-23.