@article{
  author = {niayeshnia, peyman, Rayati Damavandi, Morteza, Gholampour, Sirous},
  title = {Application of AHP and GRA Hybrid Method for Cost Management on Changes in EC Contracts Case study: EC Projects in the Oil Industry},
  journal = {Management Accounting},
  year = {2021},
  volume = {13},
  number = {47},
  pages = {175-188},
  doi = {}
}