@article{paperid:1094138, author = {}, title = {lrm;Optimal control problem: A case study on production planning in reverse logistics system}, journal = {Journal of Systems Thinking in Practice}, year = {2023}, month = {March}, issn = {2821-1669}, keywords = {Optimal control problem‎ ‎Projection method‎ Production planning system‎‎ Reverse logistics system}, }