@article{EP_2001_10_a12,
     author = {Yves Elskens},
     title = {Finite-N dynamics admit no travelling-waves solutions for the {Hamiltonian} {XY} model and single-wave collisionless plasma model},
     journal = {ESAIM. Proceedings},
     pages = {221--215},
     publisher = {mathdoc},
     volume = {10},
     year = {2001},
     doi = {10.1051/proc:2001008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.1051/proc:2001008/}
}