TY  - BOOK
AU  - Beutler, Gerhard
TI  - Methods of celestial mechanics: vol.1, physical, mathematical and numerical principles
T2  - Astronomy and astrophysics library
SN  - 3-540-40749-9
PY  - 2005///
CY  - Berlin
PB  - Springer
KW  - Celestial mechanics
KW  - Theory of perturbation
ER  -