Keywords
(2006). -. Journal of Economic Research (Tahghighat- E- Eghtesadi), 40(4), -.
. "-", Journal of Economic Research (Tahghighat- E- Eghtesadi), 40, 4, 2006, -.
(2006). '-', Journal of Economic Research (Tahghighat- E- Eghtesadi), 40(4), pp. -.
, "-," Journal of Economic Research (Tahghighat- E- Eghtesadi), 40 4 (2006): -,
-. Journal of Economic Research (Tahghighat- E- Eghtesadi), 2006; 40(4): -.