. (2005). . (e124070). Strategy, 12(4), e124070
. "" .e124070 , Strategy, 12, 4, 2005, e124070.
. (2005). '', Strategy, 12(4), e124070.
, "," Strategy, 12 4 (2005): e124070,
. . Strategy. 2005;12(4):e124070 (In Persian).
