Sneddon, Ian <br/><br/>
Elements of Partial Differential Equations /  
by Ian Sneddon 
 - London :   McGraw-Hill International Book Company,   1957 
 - p.327 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Mathematics |<br/> Differential Equations
<br/><br/><label>Dewey Class. No.: </label>515.35  / SNE-E