1.
2.
3.
Bern : Stämpfli+Cie, 1996.
German | F 67 WEI.R |
4.
5.
6.
New York : Nimmer & Geller, 1988.
Swiss german | N 44 DES.S |
7.
8.
Geneva, Switzerland : International Bureau for the Protection of Industrial Property, 1974.
Swiss german | 10B OMPI |
9.
Geneva, Switzerland : International Bureau for the Protection of Industrial Property, 1984.
English | 10B OMPI |
10.
New York, New York : International Trademark Association, 1972.
English | 64 US |