@article{05241571,
title = {From },
journal = {SIGMA. Symmetry, Integrability and Geometry: Methods and Applications [electronic only]},
volume = {3},
year = {2007},
zbl = {1131.70004},
language = {en},
url = {http://dml.mathdoc.fr/item/05241571}
}
Petrera, Matteo; Ragnisco, Orlando. From . SIGMA. Symmetry, Integrability and Geometry: Methods and Applications [electronic only], Tome 3 (2007) . http://gdmltest.u-ga.fr/item/05241571/