. (2002). . (e123840). Strategy, 10(3), e123840
. "" .e123840 , Strategy, 10, 3, 2002, e123840.
. (2002). '', Strategy, 10(3), e123840.
, "," Strategy, 10 3 (2002): e123840,
. . Strategy. 2002;10(3):e123840 (In Persian).
