@Article{         toran,
  Author        = "Tor{\'a}n, Jacobo and Wagner, Fabian",
  date-added    = "2021-07-13 13:04:56 +0200",
  date-modified = "2021-07-13 13:05:05 +0200",
  Month         = "01",
  Title         = "The Complexity of Planar Graph Isomorphism",
  Year          = "2010",
  File          = "The Complexity of Planar Graph Isomorphismb - eatcs09.pdf"
}

@Article{ toran, Author = "Tor{\'a}n, Jacobo and Wagner, Fabian", date-added = "2021-07-13 13:04:56 +0200", date-modified = "2021-07-13 13:05:05 +0200", Month = "01", Title = "The Complexity of Planar Graph Isomorphism", Year = "2010", File = "The Complexity of Planar Graph Isomorphismb - eatcs09.pdf" }