TY  - BOOK
AU  - Ferraz-Mello, Sylvio
TI  - Canonical Perturbation Theories [electronic resource]: Degenerate Systems and Resonance
SN  - 9780387389059
U1  - 515.392 
PY  - 2007///
CY  - New York
PB  - Springer
N1  - http://dx.doi.org/10.1007/978-0-387-38905-9
ER  -