7Abbott, A. 1998, "The Causal Devolution." Sociological Methods and Researth 27(2).
8Baron, J. & W. Bielby 1980, "Bringing the Finm Back in: Stratification, Segmentation, and the Organization of Work." American Sociologyical Review 45.
9Blau, P. & O. Duncan 1967, ?he Amenican Occupational Structure. New York: Free Press.
10Davis, J. 1985, The Logic of Comal Order. Newbury Park, CA: Sage Publications.
