@book{Ossing+2020, url = {https://doi.org/10.3790/9783428470877}, title = {Schutzfähigkeit von Warenzeichen}, title = {}, author = {Johann Ossing}, publisher = {Duncker & Humblot}, address = {}, doi = {doi:10.3790/9783428470877}, isbn = {9783428470877}, year = {1991}, lastchecked = {2020} }