Liechtenstein:

UNEP-WCMC and IUCN (2024), Protected Planet: The World Database on Protected Areas (WDPA) and World Database on Other Effective Area-based Conservation Measures (WD-OECM) [Online], June 2024, Cambridge, UK: UNEP-WCMC and IUCN. Available at: www.protectedplanet.net

POTA:

Copyright 2016 Parks on the Air ®. Parks on the Air ® is a registered service mark by the U.S. Patent and Trademark Office. Datas are available at: parksontheair.com

SOTA:

Copyright 2002 Summits on the Air. Summits on the Air, SOTA and the SOTA Logo are trademarks of the Programme. Datas are available at: www.sota.org.uk