Gresens, S., Stur, E. and Ekrem, T. (2012) “Phenotypic and genetic variation within the Cricotopus sylvestris species-group (Diptera, Chironomidae), across a Nearctic - Palaearctic gradient”, Fauna norvegica, 310, p. 137. doi: 10.5324/fn.v31i0.1417.