@PHDTHESIS\{IMM1999-02494,
    author       = "C. B. Clausen",
    title        = "Spatial solitons in quasi-phase matched struktures",
    year         = "1999",
    school       = "Informatics and Mathematical Modelling, Technical University of Denmark, {DTU}",
    address      = "Richard Petersens Plads, Building 321, {DK-}2800 Kgs. Lyngby",
    type         = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/2494-full.html"
}