1. Bounding eigenvalues of elliptic operators;Kuttler;SIAM Journal of Mathematical Analysis,1978
2. Dirichlet eigenvalues;Kuttler;SIAM Journal of Numerical Analysis,1979
3. Vibration of plates;Leissa;NASA SP-160,1969
4. Upper and lower bounds for the frequencies of rectangular clamped plates;Bazley;Zeitschrift fur angewandte Mathematik und Mechanik,1967
5. Application of Weinstein's method with an auxiliary problem of type I;Aronszajn;Oklahoma A & M Department of Mathematics Technical Report 3,1950