1.
2.
Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1979.
German | 29 DE |
3.
[Place of publication not identified] : [publisher not identified], 1983.
German | 23 CH |
4.
5.
Geneva [Switzerland] : International Bureau for the Protection of Industrial Property, 1962.
English | 10B OMPI |
6.
7.
Courbevoie [France] : Institut National de la Propriété Industrielle, 1962.
French | 10A OMPI |
8.
[Place of publication not identified] : [publisher not identified], 1986.
German | 28 CH |
9.
10.