1.
Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1993.
German | 28 DE |
2.
Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1995.
German | 28 DE |
3.
[Heidelberg, Germany] : [Springer], 1991.
English | 34 DE |