N. C. de Lucas; J. C. Netto-Ferreira; J. Andraos; J. C. Scaiano. Nucleophilicity toward Ketenes: Rate Constants for Addition of Amines to Aryl Ketenes in Acetonitrile Solution. J. Org. Chem. 2001, 66 (5): 5016–5021. PMID 11463250. doi:10.1021/jo005752q.
N. C. de Lucas; J. C. Netto-Ferreira; J. Andraos; J. C. Scaiano. Nucleophilicity toward Ketenes: Rate Constants for Addition of Amines to Aryl Ketenes in Acetonitrile Solution. J. Org. Chem. 2001, 66 (5): 5016–5021. PMID 11463250. doi:10.1021/jo005752q.