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1.
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Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1999.
German | 28 DE |
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2.
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Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1999.
German | 28 DE |
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3.
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Köln : Heymanns, c1997. Second edition.
German | H 30 NIR.G 1997 |
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4.
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München [Germany] : Mitteilungen der deutschen Patentanwälte, 1987.
German | 43 DE |
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