. (1999). -. (e25407). Journal of Economic Research (Tahghighat- E- Eghtesadi), 34(2), e25407
. "-" .e25407 , Journal of Economic Research (Tahghighat- E- Eghtesadi), 34, 2, 1999, e25407.
. (1999). '-', Journal of Economic Research (Tahghighat- E- Eghtesadi), 34(2), e25407.
, "-," Journal of Economic Research (Tahghighat- E- Eghtesadi), 34 2 (1999): e25407,
. -. J. Econ. Res.. 1999;34(2):e25407 (In Persian).
