1. R. Huisgen, in: A. Padwa (Ed.), The 1,3-Dipolar Cycloaddition Chemistry, vol. 1, Wiley, New York, 1984, pp. 1–176.
2. J.J. Tufariello, in: A. Padwa (Ed.), The 1,3–Dipolar Cycloaddition Chemistry, vol. 2, Wiley, New York, 1984, pp. 83.
3. Pericyclic Reaction Transition States: Passions and Punctilios, 1935-1995
4. K.N. Houk, K. Yamaguchi, in: A. Padwa (Ed.), The 1,3–Dipolar Cycloaddition Chemistry, vol. 2, Wiley, New York, 1984, pp. 407–450.