Please specify if terms of license are complied with!RestraintsBlog (2010-05-04). Strappado Bondage (in en). Bondage Restraints. Retrieved on 2011-10-13.No name, no license
BDSM: die neue Liebeslust der Möchtegernherrscher (in de). euregio-aachen.de (2015-03-06). Retrieved on 2015-03-11.Name ok, no license, web.archive.org