Halter-koch, Franz <br/><br/>
Quadratic irrationals  : an introduction to classical number theory Quadratic irrationals / 

 - Boca Roton:  Chapman & Hall/CRC Press,  2013 
 - xvi, 415p. 
<br/><br/><label>ISBN: </label>9781466591837 
<br/><br/><label>Dewey Class. No.: </label>512.7  / H197.QI