Timotius, Elkana, and Andri Hermawan. “Analysis of Logistics Problems in National E-Commerce Companies: Causative Factors, Improvement Strategies, and Solution Recommendations”. Jurnal Improsci 4, no. 2 (October 21, 2026): 114–130. Accessed October 22, 2026. https://annpublisher.org/ojs/index.php/improsci/article/view/1339.