F. M. Tsani and D. K. . Wijaya, “Bottleneck Analysis and Distribution Capacity Optimization in Used Goods Business Using Theory of Constraints: A Case Study of UD. DOA ABADI, Semarang”, Reswara J. Ris. Ilmu Tek., vol. 4, no. 4, pp. 1712–1731, Oct. 2026, doi: 10.70716/reswara.v4i4.866.