http://www.pleasuremag.com/news/4181/longboard-classic-stuben-2013

http://www.x-aces.com/index.aspx?ArticleID=b3b284c7-5fdf-4ad5-906a-c4ca3caaf6f2

http://goldenride.de/Portal/cms/front_content.php?idcat=64&idart=687

http://cooler.mpora.com/features/longboard-classic-2013-gallery.html#slide-1