Sommerfeld, A <br/><br/>
Partial Differential Equations in Physics 
A. Sommerfeld 
 - New York  Academic Press  1949 
 - x  335 
 - Lectures on theoretical physics VI .
<br/><br/><label>ISBN: </label>0-12-654658-4 
<br/><br/><label>Dewey Class. No.: </label>14..09+10.02  / SOMM