Weinstein, Alexander, <br/><br/>
Methods of intermediate problems for eigenvalues: theory and ramifications 
[by] Alexander Weinstein and William Stenger. 
 - New York,  Academic Press,  1972. 
 - xi, 236 p.  24 cm. 
 - Mathematics in science and engineering,  v. 89 .
<br/><br/> subject index , bibliography , pag 236 
<br/><br/><br/>Eng 
<br/><br/><label>ISBN: </label>0127424504 
<br/><br/><label>LCCN: </label>70154367  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Calculus of variations.<br/>Eigenvalues.
<br/><br/><label>LC Class. No.: </label>QA316 
<br/><br/><label>Dewey Class. No.: </label>515/.64