@book{Feudel1996,
  author    = {Feudel, Ulrike},
  title     = {Komplexes Verhalten in multistabilen, schwach dissipativen Systemen},
  series = {Preprint NLD},
  volume    = {34},
  journal   = {Preprint NLD},
  publisher = {Univ.},
  address   = {Potsdam},
  pages     = {11 S.},
  year      = {1996},
  language  = {de}
}
@article{KuznetsovPikovskijBezruckoetal.1997,
  author    = {Kuznetsov, Sergey P. and Pikovskij, Arkadij and Bezrucko, B. P. and Seleznev, E. P. and Feudel, Ulrike},
  title     = {O dinamike nelinejnych sistem po vne¬nim kvaziperiodi\Seskim vozdejstviem vblizi to\Ski okon\Sanija linii bifurkatcii udvoenija tora},
  year      = {1997},
  language  = {de}
}