., Moejiono, Agus Dwi Santosa, Lusia Permata Sari Hartanti, Indah Ayu Johanda Putri, and Romanda Annas Amrullah. “Crew Availability Ratio in Indonesian-Flagged Vessels: A Discrete Model Analysis of Sign-On–Sign-Off Cycle Effects on Sustainable Ship Operations ”. Journal of Cultural Analysis and Social Change 11, no. 2 (May 5, 2026): 22–30. Accessed May 6, 2026. https://jcasc.com/index.php/jcasc/article/view/4827.