@article{SIGMA_2006_2_a97,
     author = {Satoru Saito and Noriko Saitoh},
     title = {Invariant {Varieties} of {Periodic} {Points} for the {Discrete} {Euler} {Top}},
     journal = {Symmetry, integrability and geometry: methods and applications},
     year = {2006},
     volume = {2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SIGMA_2006_2_a97/}
}