Doi, Hirofumi, and Takeshi Shinoda. “tudy on mprovement of ndonesia hipbuilding roductivity ith heory of onstraints”. International Journal of Marine Engineering Innovation and Research 2, no. 2 (July 10, 2025): 102–111. ccessed December 6, 2025. https://journal.its.ac.id/index.php/ijmeir/article/view/6111.