. (2003). . (e123953). Strategy, 11(2), e123953
. "" .e123953 , Strategy, 11, 2, 2003, e123953.
. (2003). '', Strategy, 11(2), e123953.
, "," Strategy, 11 2 (2003): e123953,
. . Strategy. 2003;11(2):e123953 (In Persian).
