1. Comprehensive Organic Transformations, ed. R. C. Larock, Wiley-VCH, New York, 2nd edn, 1999, p. 1988
2. The Chemistry of Amides, ed. J. Zabicky, Wiley-Interscience, New York, 1970
3. Polyesters and Polyamides, ed. B. L. Deopura, B. Gupta, M. Joshi and R. Alagirusami, CRC Press, Boca Raton, 2008
4. The Conversion of β-Ketonitriles to β-Ketoamides by Boron Fluoride in Aqueous Acetic Acid and by Polyphosphoric Acid1