@misc{Paul2016, author = {Gerhard Paul}, title = {Visual History (Version 3.0)}, edition = {Version 3.0}, doi = {10.14765/zzf.dok.2.558.v3}, url = {http://docupedia.de/zg/paul_visual_history_v3_de_2014}, type = {webpublication}, year = {2016}, }