1. Allaman, P.M., Dunbar, F.C., Steinberg, D., 1981. Impacts of demographic trends on time allocations for household activities. Presented at the Annual Meeting of the Transportation Research Board, Washington, D.C.
2. Bollen, K.A., 1989. Structural Equations with Latent Variables. John Wiley, New York.
3. Browne, M.W., 1982. Covariance structures. In: Hawkins, D.M. (Ed.), Topics in Applied Multivariate Analysis. Cambridge, Cambridge University Press.
4. Asymptotically distribution-free methods for the analysis of covariance structures;Browne;British Journal of Mathematical and Statistical Psychology,1984
5. Damm, D., 1981. Theory and empirical results: a comparison of recent activity-based research. In: Carpenter, S.M., Jones, P.M. (Eds.), Recent Advances in Travel Demand Analysis. Gower, Aldershot, England, pp. 3–33.