@ARTICLE\{IMM2000-01186,
    author       = "P. L. Christiansen and J. C. Eilbeck and V. Z. Enolskii and N. A. Kostov",
    title        = "Quasi-periodic and periodic solutions for systems of coupled Schr{\"{o}}dinger equations of Manakov type",
    year         = "2000",
    pages        = "2263-2281",
    journal      = "Proceedings of the Royal Society of London, Series A (Mathematical, Physical and Engineering Sciences)",
    volume       = "456",
    editor       = "",
    number       = "2001",
    publisher    = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/1186-full.html"
}