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1.
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Geneva [Switzerland] : World Intellectual Property Organization, 1981.
English | E 2314G11 OMPI.BPAC(I) (E/C) |
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2.
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[Place of publication not identified] : [Carl Heymanns Verlag], 1989.
German | M 341 QUI.S |
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3.
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Torino : Utet, c1982.
Italian | M 343 GHI.C |
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4.
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Padova : Cedam, 2004.
Third edition.
Italian | T 23 MAR.C |
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