TY  - JOUR
TI  - A Kenward-Roger Approximation and Parametric Bootstrap Methods for Tests in Linear Mixed Models - The R Package pbkrtest
AU  - Ulrich Halekoh
AU  - Søren Højsgaard
JO  - Journal of Statistical Software
PY  - 2014
VL  - 59
IS  - 9
DO  - 10.18637/jss.v059.i09
UR  - https://doi.org/10.18637/jss.v059.i09
ER  -