Reference

Hans-Ulrich Schnitzler, Björn M. Siemers, Ingrid Kaipf (1999): The use of day roosts and foraging grounds by Natterer's bats {Myotis nattereri Kühl, 1818) from a colony in southern Germany – Mammalian Biology (früher Zeitschrift für Säugetierkunde) – 64: 241 - 245.