. (2004). . (e123977). Strategy, 11(4), e123977
. "" .e123977 , Strategy, 11, 4, 2004, e123977.
. (2004). '', Strategy, 11(4), e123977.
, "," Strategy, 11 4 (2004): e123977,
. . Strategy. 2004;11(4):e123977 (In Persian).
