Woodward-Hoffmann Theory R. B. Woodward and R. Hoffmann, The Conservation of Orbital Symmetry, Verlag Chemie, Weinheim, 1970. Frontier Molecular Orbital Theory I. Fleming, Frontier Orbitals and Organic Chemical Reactions
Other Useful References Polyketide Biosynthesis Historical Perspective on the Aldol Reaction Aldol Diastereoselectivity Enolate Diastereoface Selectivity Absolute Control in the Aldol Process