1.
Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1994.
German | 28 DE |
2.
Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1996.
German | K 35(121) DE 28 |
3.
Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1996.
German | 28 DE |