Titchmarsh, E C <br/><br/>
Eigenfunction expansions assoicated with second-order differntial equations 

 - Oxford  Clarendon Press  1970 
 - xi,404 p. 
<br/><br/><label>ISBN: </label> PON12 
<br/><br/><label>Dewey Class. No.: </label>515.352 T531E