. (2003). . (e123952). Strategy, 11(2), e123952
. "" .e123952 , Strategy, 11, 2, 2003, e123952.
. (2003). '', Strategy, 11(2), e123952.
, "," Strategy, 11 2 (2003): e123952,
. . Strategy. 2003;11(2):e123952 (In Persian).
