1. Kleinmann, E. F. In Comprehensive Organic Synthesis; Trost, B. M.; Flemming, I., Eds.; Pergamon Press: New York, 1991; Vol. 2, Chapter 4.1
2. Modern Variants of the Mannich Reaction
3. Catalytic Enantioselective Addition to Imines
4. Enantioselective Synthesis of β-Amino Acids; Juaristi, E., Ed.; Wiley-VCH, New York, 1997.