✓

@Book{            SteenJ.-Arthur-Seebach,
  Author        = "Steen, Lynn Arthur and J. Arthur Seebach, Jr.",
  date-added    = "2020-04-10 11:07:26 +0200",
  date-modified = "2020-04-10 11:07:26 +0200",
  Edition       = "2nd",
  Keywords      = "topology",
  Publisher     = "Springer-Verlag",
  Title         = "Counterexamples in Topology",
  Year          = "1970",
  File          = "Counterexamples in Topology - Steen, J. Arthur Seebach (0) (0) - a - a.pdf",
  file-2        = "Counterexamples in Topology - Steen, J. Arthur Seebach (1) (0) - a - a.pdf"
}

@Book{ SteenJ.-Arthur-Seebach, Author = "Steen, Lynn Arthur and J. Arthur Seebach, Jr.", date-added = "2020-04-10 11:07:26 +0200", date-modified = "2020-04-10 11:07:26 +0200", Edition = "2nd", Keywords = "topology", Publisher = "Springer-Verlag", Title = "Counterexamples in Topology", Year = "1970", File = "Counterexamples in Topology - Steen, J. Arthur Seebach (0) (0) - a - a.pdf", file-2 = "Counterexamples in Topology - Steen, J. Arthur Seebach (1) (0) - a - a.pdf" }