International Union of Pure and Applied Chemistry. Organic Chemistry Division. Commission on Nomenclature of Organic Chemistry, "extension of Rules A-1.1 and A-2.5 Concerning Numerical Terms Used in
Organic Nomenclature (Recommendations 1986)", Pure Appl. Chem., 58, 1693-1696 (1986).
This HTML reproduction is as close as possible to the published version [see IUPAC, Commission on Nomenclature of Organic Chemistry. A Guide to IUPAC Nomenclature of Organic Compounds
(Recommendations 1993), 1993, Blackwell Scientific publications, Copyright 1993 IUPAC]. If you need to cite these rules please quote this reference as their source.
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