BibTex format
@article{Gay-Balmaz:2011:10.1007/s00574-011-0030-7,
author = {Gay-Balmaz, F and Holm, DD and Ratiu, TS},
doi = {10.1007/s00574-011-0030-7},
journal = {BULLETIN OF THE BRAZILIAN MATHEMATICAL SOCIETY},
pages = {579--606},
title = {Higher order Lagrange-Poincar, and Hamilton-Poincar, reductions},
url = {http://dx.doi.org/10.1007/s00574-011-0030-7},
volume = {42},
year = {2011}
}