Wee and Chung  incorporated the integrated single-vendor single-buyer inventory model with backorder, JIT delivery and inspection cost. They used a simple algebraic approach and proved that the model has an optimal solution for the condition of . However, they did not provide the optimal solution to the problem when the restriction is not satisfied. In this note, the authors provide some patch works to enhance the volubility of Wee and Chung's paper.
International Journal of Information and Management Sciences 20(2), pp.217-233