Hackman, W., 1980. A check list of the Finnish Diptera. 1. Nematocera and Brachycera (s. str.). Notulae Entomologicae, 60(1), pp.17-48. Available at: http://www.online-keys.net/sciaroidea/add01/Hackman_1980_Check_list_Finnland.pdf.

Hackman, W., 1971. Sieni- ja surusääskiä (Diptera, Mycetophiloidea) Lounais-Hämeestä [Mycetophilidae, Dipt., aus Südest-Häme]. Lounais-Hämeen Luonto, 43, pp.59-61.

Hackman, W., 1963. Studies on the dipterous fauna in burrows of voles (Microtus, Clethrionomys) in Finland. Acta Zoologica Fennica, 102, pp.1-64.

Hackman, W., 1971. Phronia matilei n. sp., a new fungus gnat from caves in Switzerland (Diptera, Mycetophilidae). Notulae Entomologica, 52, pp.39-40.

Hackman, W., 1973. Sieni-ja surusaaskia (Diptera. Mycetophiloidea) Lounais- Hameesta. Lounais-Hameen Luonto, 43,No., pp.59-61. Available at: http://www.online-keys.net/sciaroidea/add01/Duret_1979_Mycetophila.pdf.

Hackman, W. & Meinander, M., 1979. Diptera feeding as larvae on macrofungi in Finland. Annales Zoologici Fennici, 16, pp.50-83. Available at: http://www.online-keys.net/sciaroidea/add01/Duret_1979_Platyroptilon.pdf.

Hackman, W. et al., 1988. Family Mycetophilidae (Fungivoridae). In A.  Soos & Papp, L. [Eds], eds. Catalogue of Palaearctic Diptera. Volume 3. Ceratopogonidae - Mycetophilidae. Catalogue of Palaearctic Diptera. Volume 3. Ceratopogonidae - Mycetophilidae.  Amsterdam, Oxford etc.: Elsevier Science Publishers, pp. 1-448. Chapter paginatio.