@article{Karsten2009,
  author    = {Petter Adolf Karsten},
  title     = {Hymenomycetes Fennici},
  journal   = {Acta Societatis pro Fauna et Flora Fennica},
  volume    = {T. 2},
  number    = {Nr. 1},
  pages     = {1 -- 40},
  year      = {2009},
}