. (2008). . (e124300). Strategy, 15(4), e124300
. "" .e124300 , Strategy, 15, 4, 2008, e124300.
. (2008). '', Strategy, 15(4), e124300.
, "," Strategy, 15 4 (2008): e124300,
. . Strategy. 2008;15(4):e124300 (In Persian).
