1.
2.
[Heidelberg, Germany] : [Springer], 1991.
English | 34 DE | Available |
3.
Salerno : Elea Press, 1993.
English | G 940 BIA.A | Available |
4.
London : Butterworths, 1986.
Second edition.
English | G 62 CAW.P 1986 | Available |
5.
6.
Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1992.
German | 29 DE |