1. H. Nozaki, S. Moriuti, H. Takaya, and R. Noyori,Tetrahedron Lett., 1966, 5239.
2. W. S. Knowles and M. J. Sabacky,J. Chem. Soc., Chem. Commun. 1968, 1445.
3. L. Hornen, H. Siegel, and H. Büthe,Angew. Chem. Int. Ed. Engl., 1968,7, 942.
4. Catalytic Asymmetric Synthesis, Ed. I. Ojima, VCH Publishers: New York, 1993.
5. O. M. Nefedov, E. A. Shapiro, and A. B. Dyatkin,The Chemistry of Acid Derivatives, In Supplement B: Vol. 2, Ed. S. Patai, Wiley, New York, 1992, Chapter 25.