− | He is a co-author of “Domain-Namen im Internet.”<ref>[http://www.sedo.com/uk/about-us/press-page/press/?tracked=&partnerid=&language=e sedo.com]</ref> | + | He is a co-author of "Domain-Namen im Internet."<ref>[http://www.sedo.com/uk/about-us/press-page/press/?tracked=&partnerid=&language=e sedo.com]</ref> |