共 4 条
[1]
Aronszajn N., 1951, P S SPECTRAL THEORY, P179
[2]
METHODS FOR LOWER BOUNDS TO FREQUENCIES OF CONTINOUOUS ELASTIC SYSTEMS
[J].
ZEITSCHRIFT FUR ANGEWANDTE MATHEMATIK UND PHYSIK,
1966, 17 (01)
:1-&
[3]
BAZLEY NW, 1967, ARCH RATION MECH AN, V27, P398
[4]
SCHELLHAAS H, TO BE PUBLISHED