@article{
  author = {ameli basiri, maryam, falsafi, Reza , eshtehardian, ehsan},
  title = {Identifying the key factors affecting construction project portfolios combination in iran},
  journal = {Modiriat-e- farda},
  year = {2019},
  volume = {17},
  number = {57},
  pages = {83-96},
  doi = {}
}