TY  - RPRT
TI  - Comparison of finite element and analytic calculations of the resonant modes and frequencies of a thick shell sphere 
AU  - Gilsinn, David E
AU  - Hansen, Hans J
AU  - Huerta-Garnica, Miguel
AU  - Teague, E Clayton
PY  - 1991
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - NIST IR 4568
DO  - 10.6028/NIST.IR.4568
ER  -