TY  - BOOK
AU  - Pini Gurfil, P. Kenneth Seidelmann
TI  - Celestial Mechanics and Astrodynamics: Theory and Practice
SN  - 9783662503706
PB  - Springer
UR  - https://link.springer.com/openurl?genre=book&isbn=978-3-662-50370-6
ER  -