Ertl, P. (2003). "Cheminformatics Analysis of Organic Substituents: Identification of the Most Common Substituents, Calculation of Substituent Properties, and Automatic Identification of Drug-like Bioisosteric Groups". Journal of Chemical Information and Modeling. 43 (2): 374–380. doi:10.1021/ci0255782. PMID12653499.
Ertl, P. (2003). "Cheminformatics Analysis of Organic Substituents: Identification of the Most Common Substituents, Calculation of Substituent Properties, and Automatic Identification of Drug-like Bioisosteric Groups". Journal of Chemical Information and Modeling. 43 (2): 374–380. doi:10.1021/ci0255782. PMID12653499.
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Nomenclature of Organic Chemistry. IUPAC Recommendations and Preferred Names 2013. Favre, Henri A.,, Powell, Warren H., 1934–, International Union of Pure and Applied Chemistry. Cambridge, UK: Royal Society of Chemistry. 2013. ISBN9781849733069. OCLC865143943.{{cite book}}: CS1 maint: others (link)
Nomenclature of Organic Chemistry. IUPAC Recommendations and Preferred Names 2013. Favre, Henri A.,, Powell, Warren H., 1934–, International Union of Pure and Applied Chemistry. Cambridge, UK: Royal Society of Chemistry. 2013. ISBN9781849733069. OCLC865143943.{{cite book}}: CS1 maint: others (link)