Soldán, Tomáš - Landolt, P. (ed.) - Sartori, M. (ed.)
The Ephemeroptera: whose sister group are they?
Fribourg: Maron+Tinguely and Lachat SA, 1997. In: Ephemeroptera and Plecoptera: Biology - ecology - systematics., s. 514-519
http://hdl.handle.net/11104/0032904