@article{CRMATH_2007__345_12_689_0,
     author = {Chardard, Fr\'ed\'eric},
     title = {Maslov index for solitary waves obtained as a limit of the {Maslov} index for periodic waves},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {689--694},
     publisher = {Elsevier},
     volume = {345},
     number = {12},
     year = {2007},
     doi = {10.1016/j.crma.2007.11.003},
     language = {en},
     url = {http://www.numdam.org/articles/10.1016/j.crma.2007.11.003/}
}