@article{JSSv046i09,
title={The R Package bild for the Analysis of Binary Longitudinal Data},
volume={46},
url={https://www.jstatsoft.org/index.php/jss/article/view/v046i09},
doi={10.18637/jss.v046.i09},
abstract={We present the R package bild for the parametric and graphical analysis of binary longitudinal data. The package performs logistic regression for binary longitudinal data, allowing for serial dependence among observations from a given individual and a random intercept term. Estimation is via maximization of the exact likelihood of a suitably defined model. Missing values and unbalanced data are allowed, with some restrictions. The code of bild is written partly in R language, partly in Fortran 77, interfaced through R. The package is built following the S4 formulation of R methods.},
number={9},
journal={Journal of Statistical Software},
author={Gonçalves, M. Helena and Cabral, M. Salomé and Azzalini, Adelchi},
year={2012},
pages={1–17}
}