@Article{         Wagner:JIPC:1977,
  Author        = "Wagner, Klaus W.",
  date-added    = "2020-08-11 12:55:06 +0200",
  date-modified = "2020-08-11 12:55:17 +0200",
  Journal       = "J. Inf. Process. Cybern.",
  Pages         = "473--487",
  Title         = {Eine topologische Charakterisierung einiger Klassen regul{\"a}rer Folgenmengen},
  Volume        = "13",
  Year          = "1977"
}

@Article{ Wagner:JIPC:1977, Author = "Wagner, Klaus W.", date-added = "2020-08-11 12:55:06 +0200", date-modified = "2020-08-11 12:55:17 +0200", Journal = "J. Inf. Process. Cybern.", Pages = "473--487", Title = {Eine topologische Charakterisierung einiger Klassen regul{\"a}rer Folgenmengen}, Volume = "13", Year = "1977" }