Titchmarsh, E. C.  1899- <br/><br/>
Eigenfunction expansions associated with second-order differential equations/ 
E. C. Titchmarsh. 
 - Oxford:  Clarendon Press,  1946. 
 - [vii], 176 p. 
<br/><br/><label>Dewey Class. No.: </label>515.35  / T617e