. (2003). . (e123851). Strategy, 10(4), e123851
. "" .e123851 , Strategy, 10, 4, 2003, e123851.
. (2003). '', Strategy, 10(4), e123851.
, "," Strategy, 10 4 (2003): e123851,
. . Strategy. 2003;10(4):e123851 (In Persian).
