Bat Conservation Trust

https://naturstyrelsen.dk/media/nst/Attachments/FLAGERMUS_forvaltningsplan_2013_FinalCut2.pdf

AudioMoth | UK | Open Acoustic Devices

Danmarks Naturfredningsforening Sønderborg – Sønderborg

https://www.eurobats.org/

https://www.batconservationireland.org/

https://www.batsurvey.org/wp-content/uploads/VisualDeterminationOfMyotis.pdf

http://www.sweden.chiroptera.se/

https://www.nyctalus.com/

https://www.naturvardsverket.se/Var-natur/Djur-och-vaxter/Rad/Fladdermossen-i-Sverige/Fladdermusarter-i-Sverige/