[1]
W. Wulker, “<i>Chironomus fraternus</i> sp. n. and <i>C. beljaninae</i> sp. n., sympatric sister species of the <i>aberratus</i> group in Fennoscandian reservoirs”, Entomol. Fennica, vol. 2, no. 2, pp. 97–109, Jun. 1991.