Diggle P., Liang, K-Y., Zeger, S.L. (1994) Analysis of Longitudinal Data Oxford University Press.
Fahrmeir, Tutz, (1994) Multivariate Statistical Modelling using Generalized Linear Models Springer Statistics, New York.
Huber, P.J. ``The behaviour of maximum likelihood estimators under non-standard conditions'' in LeCam, L.M. and Neyman J. [eds] Proceedings of the Fifth Berkeley Symposium on Mathematical Statistics and Probability. University of California Press.
Liang, K-Y., Zeger, S.L., (1986) ``Longitudinal analysis using generalized linear models.'' Biometrika 73: 13--22.
Nelder, J. (1994) ``An alternative view of the splicing data.'' Applied Statistics. 43: 469--476.
Preisser, J.S., Qaqish, B.F., (1996) ``Deletion diagnostics for generalized estimating equations'' Biometrika 83: 551-562.
Tierney, L. (1989) XLISP-Stat: A Statistical Environment based on the XLISP language. Technical Report No. 528. University of Minnesota School of Statistics.
Zeger, S.L., Liang K-Y., (1986) ``Longitudinal data analysis for discrete and continuous outcomes'' Biometrics 42: 121--130.