@article{SIGMA_2016_12_a17,
     author = {Paula Balseiro and Nicola Sansonetto},
     title = {A {Geometric} {Characterization} of {Certain} {First} {Integrals} for {Nonholonomic} {Systems} with {Symmetries}},
     journal = {Symmetry, integrability and geometry: methods and applications},
     year = {2016},
     volume = {12},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SIGMA_2016_12_a17/}
}