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1.
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Genf : Upov, 1983.
German | E 241S21 UPOV.G |
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2.
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München [Germany] : Max-Planck-Gesellschaft, 1985.
German | G 25 GEN |
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3.
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Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1992.
German | G 252 DE 28 |
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4.
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Düsseldorf : Werner-Verlag, 1993.
German | G 26 BAU.P |
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5.
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[Place of publication not identified] : [publisher not identified], 2002.
German | G 25 |
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6.
|
Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1992.
German | G 252 DE 28 |
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