@ARTICLE\{IMM2000-0324,
    author       = "L. Torner and J. P. Torres and O. Bang",
    title        = "Robustness of quadratic solitons with periodic gain",
    year         = "2000",
    month        = "nov",
    keywords     = "Solitons; Second-harmonic generation; Self-frequency doubling lasers; Cascading; Optical amplifiers",
    pages        = "479-485",
    journal      = "Optics Communications",
    volume       = "185",
    editor       = "",
    number       = "",
    publisher    = "Elsevier",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/324-full.html",
    abstract     = "We address the robustness of quadratic solitons with periodic non-conservative perturbations. We find the evolution equations for guiding-center solitons under conditions for second-harmonic generation in the presence of periodic multi-band loss and gain. Under proper conditions, a robust guiding-center soliton formation is revealed."
}