Recommended Readings
See the following texts for more information on generalized estimating equations:
Diggle, P. J., P. Heagerty, K. Y. Liang, and S. L. Zeger. 2002. The analysis of Longitudinal Data, 2 ed. Oxford: Oxford University Press. Hardin, J. W., and J. M. Hilbe. 2001. Generalized Estimating Equations. Boca Raton, FL: Chapman & Hall/CRC. McCullagh, P., and J. A. Nelder. 1989. Generalized Linear Models, 2nd ed. London: Chapman & Hall.