TY  - RPRT
TI  - Two Mathematical Models of Nonlinear Vibrations
AU  - Brugarolas, Paul
AU  - Bayard, David
AU  - Spanos, John
AU  - Breckenridge, William
PY  - 2007
UR  - https://ntrs.nasa.gov/citations/20100011238
ID  - 20100011238
ER  -