TY - JOUR TI - TheRPackagegeepackfor Generalized Estimating Equations AU - Ulrich Halekoh AU - Søren Højsgaard AU - Jun Yan JO - Journal of Statistical Software PY - 2006 VL - 15 IS - 2 DO - 10.18637/jss.v015.i02 UR - https://doi.org/10.18637/jss.v015.i02 ER -