1. aKlein, J.InThe Chemistry of the Carbon-Carbon Triple Bond;Patai, S., Ed.;Wiley:New York, 1978; Part 1; Chapter 9, p343.
2. bMoreau, J.InThe Chemistry of Ketenes, Allenes and Related Compounds;Patai, S., Ed.Wiley:New York, 1980; Part 1; p363.
3. eLandor, P. D.InThe Chemistry of the Allenes;Landor, R. S., Ed.;Academic Press:London, 1982; p19.