00613nam a2200121Ia 4500008004100000082002000041100012200061245016000183260003100343300002600374440005800400700003300458250506b        |||||||| |||| 00| 0 eng d  a515.64bC748.VM  aConference on "Approximation of Eigenvalues of Differential Operators", Vanderbilt Univ., Nashville, June 26-30, 1972  aVariational methods for eigenvalue approximationsb; lectures presented at the National Science Foundation, Conference Board of the Mathematical Sciences /  aPhiladelphia:bSIAM,c1974  av, 160p. Index, Bibl.  aRegional conference series in Applied Mathematicsv15  aWeinberger, Hans F.eauthor.