Jakovlev, J., Kjærandsen, J. & Viklund, B., 2008. Fungus gnats (Diptera: Bolitophilidae, Diadocidiidae, Ditomyiidae, Keroplatidae & Mycetophilidae) from Tyresta National Park and Nature Reserve in Sweden. Sahlbergia , 14(1), pp.29-52. Available at: http://www.online-keys.net/sciaroidea/add01/Jakovlev_al_2008_fungus_gnats_from_tyresta.pdf.