1. (b) and Tetrahedron Lett. 2479 (1965).
2. Tandem Mass Spectrometry, (Ed.), Wiley, New York (1983).
3. Recent reviews: (a) (Ed.), Applications of Mass Spectrometry in Organic Stereochemistry, Verlag Chemie, Weinheim (in Press, 1988);
4. Stereochemistry of organic ions in the gas phase: A review