. (1997). -. (e25481). Journal of Economic Research (Tahghighat- E- Eghtesadi), 32(2), e25481
. "-" .e25481 , Journal of Economic Research (Tahghighat- E- Eghtesadi), 32, 2, 1997, e25481.
. (1997). '-', Journal of Economic Research (Tahghighat- E- Eghtesadi), 32(2), e25481.
, "-," Journal of Economic Research (Tahghighat- E- Eghtesadi), 32 2 (1997): e25481,
. -. J. Econ. Res.. 1997;32(2):e25481 (In Persian).
