@article { author = {unknown,}, title = {-}, journal = {Journal of Economic Research (Tahghighat- E- Eghtesadi)}, volume = {34}, number = {2}, pages = {-}, year = {1999}, publisher = {University of Tehran}, issn = {0039-8969}, eissn = {2588-6118}, doi = {}, abstract = {-}, keywords = {}, title_fa = {سرمقاله}, abstract_fa = {}, keywords_fa = {}, url = {https://jte.ut.ac.ir/article_25408.html}, eprint = {https://jte.ut.ac.ir/article_25408_4e9feae954b3f926f8288e1ddff1cddb.pdf} }