@article{SIGMA_2011_7_a108,
     author = {Bavo Langerock and Tom Mestdag and Joris Vankerschaver},
     title = {Routh {Reduction} by {Stages}},
     journal = {Symmetry, integrability and geometry: methods and applications},
     year = {2011},
     volume = {7},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SIGMA_2011_7_a108/}
}