Comprehensive Patent Data of the German Democratic Republic 1949-1990

Hipp, Ann, Michael Fritsch, Maria Greve, Jutta Günther, Marcel Lange, Christian Liutik, Beate Pfeifer, Mariia Shkolnykova and Michael Wyrwich: Comprehensive Patent Data of the German Democratic Republic 1949-1990. Journal of Economics and Statistics. 244, 149-158. http://doi.org/10.1515/jbnst-2022-0058