@article{
  author = {Heydari, Tahereh, seyedhosseini, seyed mohammad, Makui, Ahmad},
  title = {  Developing and solving a two-stage Optimization Model for project Portfolio selection and scheduling in uncertain conditions},
  journal = {Modiriat-e- farda},
  year = {2018},
  volume = {16},
  number = {53},
  pages = {0-0},
  doi = {}
}