Hopf, Eberhard <br/><br/>
Selected works of Eberhard Hopf  with commentaries 
ed by Cathleen S. Morawetz, James B. Serrin & Yakov G. Sinai 
 - Providence  American Mathematical Society  2002 
 - xxiii, 396p. 
<br/><br/><label>ISBN: </label>082182077X 
<br/><br/><label>Dewey Class. No.: </label>515  / P021