1.
Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1995.
German | 29 DE |
2.
3.
4.
London [England] : Euromoney Institutional Investor PLC, 1994.
English | 72 GB |
5.
Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1993.
English | 29 DE |
6.
7.
[Geneva, Switzerland] : [World Intellectual Property Organization], 1990.
English | 6B OMPI |