Berstel, Jean and others <br/><br/>
Combinatorics on words  christoffel words and repetitions in words 
Jean Berstel ...et.al. 
 - Providence  American Mathematical Society  2009 
 - xii, 147p. Bibl. Index. 
 - CRM monograph series    V. 72 .
<br/><br/> "Purchased under NBHM grant for the year 2009-2010"   
<br/><br/><label>ISBN: </label>9780821844809 
<br/><br/><label>Dewey Class. No.: </label>511.6  / B535.CW