TY  - DATA
AU  - Guillemin, Victor,
AU  - Sternberg, Shlomo.
TI  - Variations on a theme by Kepler 
T2  - Colloquium Publications, 
SN  - 9781470431884 (online)
PY  - 1990///
CY  - Providence, R.I.
PB  - American Mathematical Society
KW  - Conformal geometry
KW  - Lie groups
KW  - Planetary theory
KW  - Symmetry (Physics)
N1  - Includes bibliographical references (p. 83-86) and index
UR  - https://doi.org/http://dx.doi.org/10.1090/coll/042
ER  -