1. B. Robinson, Chem. Rev., 63, 373 (1963).
2. B. Robinson, Chem. Rev., 69, 227 (1969); Usp. Khim., 40, 1434 (1971).
3. I. I. Grandberg, Izv. Timiryazevsk. Sel'skokhoz. Akad., No. 5, 188 (1972).
4. I. I. Grandberg and V. I. Sorokin, Usp. Khim., 18, 266 (1974).
5. H. J. Shine, in: Aromatic Rearrangements, Elsevier, Amsterdam (1967), p. 190.