. (2006). -. (e18457). Financial Research Journal, 7(2), e18457
. "-" .e18457 , Financial Research Journal, 7, 2, 2006, e18457.
. (2006). '-', Financial Research Journal, 7(2), e18457.
, "-," Financial Research Journal, 7 2 (2006): e18457,
. -. FRJ. 2006;7(2):e18457 (In Persian).