Ditrich, T.; Papáček, M.; Heino, M. The Latitudinal Uniformity of the Unique Life History of <i>Velia caprai</I> (Heteroptera: Veliidae) and Notes to the Pre-Overwintering Period of Selected Water Striders (Heteroptera: Gerridae). Entomol. Fennica 2011, 22, 106-112.