@article{
  author = {Ebrahimi, Mohammad, Amiri, Maghsod},
  title = {Developing and Solving two Level Lot Sizing Problem with Multi Production Methods using Vibration Damping Optimization Algorithm},
  journal = {Journal of Development & Evolution Mnagement},
  year = {2018},
  volume = {9},
  number = {0},
  pages = {117-129},
  doi = {}
}