. (2005). . (e124115). Strategy, 13(2), e124115
. "" .e124115 , Strategy, 13, 2, 2005, e124115.
. (2005). '', Strategy, 13(2), e124115.
, "," Strategy, 13 2 (2005): e124115,
. . Strategy. 2005;13(2):e124115 (In Persian).
