Conference on "Approximation of Eigenvalues of Differential Operators", Vanderbilt Univ., Nashville, June 26-30, 1972 <br/><br/>
Variational methods for eigenvalue approximations  ; lectures presented at the National Science Foundation, Conference Board of the Mathematical Sciences / 

 - Philadelphia:  SIAM,  1974 
 - v, 160p. Index, Bibl. 
 - Regional conference series in Applied Mathematics  15 .
<br/><br/><label>Dewey Class. No.: </label>515.64  / C748.VM