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1.
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Praha : Úérad prêumyslového vlastnictví, 1993.
Czech | F 140 PRO.P |
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2.
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[Place of publication not identified] : [publisher not identified], 1984.
English | F 140 KAS.D 1984 |
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3.
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[Place of publication not identified] : [publisher not identified], 1997.
Russian | F 140 POL.I |
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4.
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Tokyo [Japan] : Patent Data Center, 1979.
English | F 140 UEK.S |
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