Foto: "<a href="https://www.ccnull.de/foto/winter-background-girl-sitting-by-the-window-with-a-frosty-pattern/1026574" target="_blank">Winter background, girl sitting by the window with a frosty pattern</a>" von <a href="https://www.ccnull.de/fotograf/marco-verch" target="_blank">Marco Verch</a> via <a href="https://www.ccnull.de" target="_blank">ccnull.de</a> - <a href="https://www.flickr.com/photos/30478819@N08/50689253351/" target="_blank">Bildquelle</a>, <a href="https://creativecommons.org/licenses/by/2.0/de/" target="_blank">CC-BY 2.0</a>