1. Rockland, K.S., Encyclopedia of Psychology, Kazdin, A.E., Ed., Washington, DC: Am. Psychological Association, 2000, vol. 8, pp. 447–455.
2. Womack, E.B. and McWhirter, J., Org. Synth., 1940, vol. 20, p.77.
3. Cason, J., Org. Synth., 1945, vol. 25, p.19.
4. Prichard, W.W., Org. Synth., 1948, vol. 28, p.68.
5. Myasoedov, N.F. and Sidorov, G.V., Radiokhimiya, 1981, vol. 23, no. 2, pp. 288–295.