1.
2.
3.
Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1995.
German | 28 DE |
4.
5.
6.
[Place of publication not identified] : [publisher not identified], 1999.
German | G 74(121) DE 28 |
7.
[Place of publication not identified] : [publisher not identified], 1999.
French | 34 DE |
8.
9.
Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1999.
German | 28 DE |
10.