Marked references e.g. as Specialist for e-marketing with additional qualification in multimedia (Comcave College GmbH, from January to March 2017), in Multimediadesign for Web and Print (alfatraining e.K., from January to July 2016) and for study supplementation Social Media - web communication in education, science and economy (Humboldt-University Berlin, from November 2012 to May 2013)