@techreport{AzcuyBecquerHeinrich2023, author = {Claudia Azcuy Becquer and Horst-Alfred Heinrich}, title = {Data documentation on history visualisations on the covers of all issues of Der Spiegel between 1965 and 2021}, institution = {Sozial- und Bildungswissenschaftliche Fakult{\"a}t}, pages = {126 Seiten}, year = {2023}, }