. (2003). . (e123848). Strategy, 10(4), e123848
. "" .e123848 , Strategy, 10, 4, 2003, e123848.
. (2003). '', Strategy, 10(4), e123848.
, "," Strategy, 10 4 (2003): e123848,
. . Strategy. 2003;10(4):e123848 (In Persian).
