. (2002). . (e123804). Strategy, 9(4), e123804
. "" .e123804 , Strategy, 9, 4, 2002, e123804.
. (2002). '', Strategy, 9(4), e123804.
, "," Strategy, 9 4 (2002): e123804,
. . Strategy. 2002;9(4):e123804 (In Persian).
