@article{KurthsSchwarzWitt1995,
  author    = {J{\"u}rgen Kurths and Udo Schwarz and Annette Witt},
  title     = {Non-linear data analysis in solar radio astronomy},
  url       = {http://www.agnld.uni-potsdam.de/~shw/Paper/lnp.ps.gz},
  year      = {1995},
}