@INPROCEEDINGS{Zhou2004,
  author={Li Zhou and Disney, S.M. and Lalwani, C.S. and HeLei Wu},
  booktitle={Fifth World Congress on Intelligent Control and Automation (IEEE Cat. No.04EX788)}, 
  title={Reverse logistics: a study of bullwhip in continuous time}, 
  year={2004},
  volume={4},
  pages={3539-3542},
  doi={10.1109/WCICA.2004.1343205},
  url={https://www.researchgate.net/publication/224753204_Reverse_logistics_A_study_of_bullwhip_in_continuous_time}
  }