@ARTICLE\{IMM2002-01646,
    author       = "S. Denisov and S. Flach and A. A. Ovchinnikov and O. Yevtushenko and Y. Zolotaryuk",
    title        = "Broken space-time symmetries and mechanisms of retification of ac fields by nonlinear (non)adiabatic response",
    year         = "2002",
    pages        = "1-10/041104",
    journal      = "Physical Review E",
    volume       = "66",
    editor       = "",
    number       = "",
    publisher    = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/1646-full.html"
}