Courant, Richard <br/><br/>
Dirichlet's principle, conformal mapping, and minimal surfaces 
Richard Courant 
 - New York  Springer-Verlag  1977 
 - XI, 331 p  fig  25 cm 
<br/><br/> Contine bibliogr. si index 
<br/><br/><label>ISBN: </label>3540902465