@book{Fezer+2020,
url = {https://doi.org/10.3790/9783428430673},
title = {Der Benutzungszwang im Markenrecht},
title = {},
author = {Karl-Heinz Fezer},
publisher = {Duncker & Humblot},
address = {},
doi = {doi:10.3790/9783428430673},
isbn = {9783428430673},
year = {1974},
lastchecked = {2020}
}