1. Alwin, D. F., & Hauser, R. M. (1975). The decomposition of effects in path analysis.American Sociological Review, 40, 37–47.
2. Bentler, P. M., & Freeman, E. H. (1983). Tests for stability in linear structural equation systems.Psychometrika, 48, 143–145.
3. Bollen, K. A., (1987). Total, direct and indirect effects in structural equation models. In C. C. Clogg (Ed.),Sociological methodology, 1987 (pp. 37–69). Washinton, D. C.: American Sociological Association.
4. Brand, M. (1976). Introduction: Defining causes. In M. Brand (Ed.),The nature of causation (pp. 1–44). Urbana, IL: University of Illinois Press.
5. Chow, G. C. (1975).Analysis and control of dynamic economic systems. New York: Wiley.