Gatecki Andrzej and Burzykowski Tomasz <br/><br/>
Linear Mixed - Effects Models Using R :  a step-by-step approach 

 - New York :  Springer ,  2013. 
 - xxxii, 542 p. : 
<br/><br/><label>ISBN: </label>9781461438991 
<br/><br/><label>Dewey Class. No.: </label>519.5 GAT