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[1]JournalofOrganicChemistryUSSR(EnglishTranslation),1989,vol.25,p.1081-1084 ZhurnalOrganicheskoiKhimii,1989,vol.25,p.1201-1204
[1]CollectionofCzechoslovakChemicalCommunications,1982,vol.47,p.2235-2245
[1]JournalofOrganicChemistryUSSR(EnglishTranslation),1989,vol.25,p.1081-1084 ZhurnalOrganicheskoiKhimii,1989,vol.25,p.1201-1204