Duchowski, Andrew T. , <br/><br/>
Eye tracking methodology : theory and practice 

 - 2nd ed. 
 - Berlin  Springer-Verlag  2007. 
 - xxiv, 328 p. :  ill.;  24 cm. 
<br/><br/> Previous ed.: 2003.  
<br/><br/><label>ISBN: </label>9781846286087 
<br/><br/><label>Dewey Class. No.: </label>004.019 DUC