All my photos are licensed under CC-BY-SA-4.0 and can be used according to this license. When you use my photos outside Wikipedia you must add at least the following Copyright:
CC-BY-SA-4.0 Markus Giger (commons.wikimedia.org)
You also find this copyright info in the exif data of my photos. If you find there CC-BY-SA-2.5-CH you are also allowed to use this older license. But I allow also for these photos to use the CC-BY-SA-4.0 license. For further questions you can reach me under my username, written as guerbetaler, (at) yahoo.fr.
CC-BY-SA-2.5-CH
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