TY  - BOOK
AU  - Gatecki, Andrzej
AU  - Burzykowski, Tomasz
TI  - Linear mixed-effects models using R: : a step-by-step approach 
T2  - Springer texts in Statistics
SN  - 9781461438991
U1  - 519.538 
PY  - 2013///
CY  - New York
PB  - Springer
ER  -