. (2002). . (e123817). Strategy, 9(4), e123817
. "" .e123817 , Strategy, 9, 4, 2002, e123817.
. (2002). '', Strategy, 9(4), e123817.
, "," Strategy, 9 4 (2002): e123817,
. . Strategy. 2002;9(4):e123817 (In Persian).
