@article{
  author = {badakhshan targhi, esmat, solimanpour omran, mahbobeh, fazli, rokhsareh},
  title = {Identification of factors affecting quality improvement of multi-grade classes in Elementary Schools},
  journal = {Educational Leadership & administration},
  year = {2023},
  volume = {16},
  number = {4},
  pages = {147-172},
  doi = {}
}