Zwick, Peter Limnological River Station Schlitz, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society;
Krzeminski, W., & Zwick, P. (1993). New and little known Ptychopteridae (Diptera) from the Palaearctic Region. Aquatic Insects, 15(2), 65-87.