Reference
Grzegorz Lesinski, Elzbieta Fuszara, Maciej Fuszara, Bartlomiej Popczyk, Andrzej Lech Ruprecht (2008): The occurrence of the northern bat, Eptesicus nilssonii (Keyserling & Blasius, 1839), in Warsaw and its vicinity, Central Poland – Nyctalus – Internationale Fledermaus-Fachzeitschrift – NF_13: 137 - 141.