Geometry and spectra of compact Riemann surfaces // 
Peter Buser. 
 - Boston ::  Birkhäuser,  1992. 
 - xiv, 454 p. : 
<br/><br/><label>ISBN: </label>0817634061 (acid-free) 
<br/><br/><label>Dewey Class. No.: </label>515.223  / PET/G