hat
WH Powell: Revizyon nan pwolonje Hantzsch-Widman Sistèm nan nomenklature pou heteromonocycles, nan: Pi aplike. Chem.1983, 55, 409-416;
eng
W. H. Powell: Revision of the extended Hantzsch-Widman System of Nomenclature for Heteromonocycles, in: Pure Appl. Chem.1983, 55, 409–416;