Kudasheva, I. A.; Musarinov, R. S.; Nedogrei, E. P.; Akhmatdinov, R. T.; Kantor, E. A.; Rakhmankulov, D. L.
J. Gen. Chem. USSR (Engl. Transl.), 1986 , vol. 56, # 3 p. 617 - 621,545 - 549
McClelland, Robert A.; Watada, Brian; Lew, Calvin S. Q.
Journal of the Chemical Society, Perkin Transactions 2: Physical Organic Chemistry (1972-1999), 1993 , # 10 p. 1723 - 1728