http://qa.pandora-2.com/index.php?qa=user&qa_1=Julianrexin
https://www.gaiaonline.com/profiles/julianrexin/45934986/
https://www.gm-volt.com/members/julianrexin.315236/about
https://www.polygon.com/users/Julianrexin
https://www.openstreetmap.org/user/Julianrexin
https://participa.terrassa.