TY  - BOOK
AU  - Gurfil,Pini
TI  - MODERN ASTRODYNAMICS
SN  - 0123735629
U1  - 629.41 
PY  - 2006///
CY  - 
PB  - Academic Press, London
KW  - Astrodynamics
KW  - Perturbation (Mathematics)
ER  -