Courant, Richard,  1888 <br/><br/>
Dirichlet's principle, conformal maping and minimal surface by R.Courant ; with an appendix by M Schiffer 

 - New York :  Interscience Publishers,  1950 
 - xiii, 330p. :  diagrs ;  23 cm. 
 - Pure & Applied Mathmatics -a Series of Tect Monographs v ;  3 .
<br/><br/> includs : p. 319-323 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ibn Khallikans--Biographical--Dictionaries
<br/><br/><label>Dewey Class. No.: </label>152