@article{LeLeMc2007b, Author = {T. Lee and M. Leok and {N. H.} McClamroch}, Journal = {Celestial Mechanics and Dynamical Astronomy}, Title = {{L}ie Group Variational Integrators for the Full Body Problem in Orbital Mechanics}, Year = {2007}, Volume = {98}, Number = {2}, Pages = {121--144}, doi = {10.1007/s10569-007-9073-x}, }