TY  - RPRT
TI  - RESEARCH ON VIBRATION IN COMPLICATED STRUCTURES BY ENERGY METHODS.
AU  - Heckl, M.
AU  - Lyon, R. H.
AU  - Maidanik, G.
PY  - 1961
UR  - https://ntrs.nasa.gov/citations/19620001705
ID  - 19620001705
ER  -