Weiberger, Hans F. <br/><br/>
Variational methods for eigenvalues approximation 

 - Pennsylvania :   Society for Industrial and Applied Mathematics,  1974.  
 - v,160p.  : ill.   ; 25cm.  
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential operators<br/>Eigenvalues<br/>Approximation theory<br/>Maxima and Minima
<br/><br/><label>LC Class. No.: </label>MATH QA329.4.W44