John, Fritz. <br/><br/>
Plane waves and spherical means :  Applied to partial differential equations / 
By Fritz John. 
 - 1st Ed. 
 - Mineola :  Dover Publications,  2004. 
 - 172p. ;  00 cm. 
<br/><br/><label>ISBN: </label>9780486438047 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MATHEMATICS.
<br/><br/><label>Dewey Class. No.: </label>517.38  / JOH