Susanto D, Inarto A. OPTIMIZATION OF THE COLLECTING BUSINESS PROCESS FOR EXPRESS DELIVERY SERVICES USING THE BUSINESS PROCESS IMPROVEMENT (BPI) METHOD AT GERAI BERSAMA ASPERINDO MULTIEKSPRES. ECO EDU ENTRE [Internet]. 2025Apr.4 [cited 2026Apr.24];5(1):167-81. Available from: http://ije3.esc-id.org/index.php/home/article/view/346