. (2006). . (e124157). Strategy, 13(4), e124157
. "" .e124157 , Strategy, 13, 4, 2006, e124157.
. (2006). '', Strategy, 13(4), e124157.
, "," Strategy, 13 4 (2006): e124157,
. . Strategy. 2006;13(4):e124157 (In Persian).
