@article{LeLeMc2007a, Author = {T. Lee and M. Leok and {N. H.} McClamroch}, Journal = {Comput. Methods Appl. Mech. Engrg.}, Volume = {196}, Number = {29-30}, Pages = {2907--2924}, Title = {{L}ie Group Variational Integrators for the Full Body Problem}, Year = {2007}, doi = {10.1016/j.cma.2007.01.017}, }