1. O. Dimroth, Ber. 35, 2355 (1902).,
2. M.M. Koton and T.M. Zorina, J Gen. Chem. 17, 1220, 1303 (1947); M.M. Kotottand A.A. Bolshakova, J. Gen. Chern. 18, 1290 (1548); M.M. Koton, J. Gen. Chem. 19,730, 734 (1949) (T.p. 743,709); M.M. Koton and I.A. Chemov, J. Gen. Chem. 19, 2104 (1949) (T.p. a-175); M.M.. Kotren, J Gen. Chem. 20, 2096 (1956) (T.p. 2171).
3. M.M. Koton and T.M. Zorina, J. Gen. Chem. 17, 1220 (1947).
4. M.M. Koton and V.F. Martynova, J. Gen. Chem. 25, 594 (1955) (T.p. 565).
5. M.M. Koton and V.F. Martynova, J. Gen. Chem. 25, 705 (1955) (T.p. 673).