@inproceedings{iiasa4820,
       booktitle = {Proceedings of 6th IFIP TC5/WG5.7 International Conference APMS'96},
           title = {Advances in production management systems},
            year = {1996},
             url = {https://pure.iiasa.ac.at/id/eprint/4820/},
          author = {Okino, N. and Tamura, H. and Fujii, S.}
}