1. Frisch, M.J., Trucks, G.W., Schlegel, H.B., Scuseria, G.E., Robb, M.A., Cheeseman, J.R., Zakrzewski, V.G., Montgomery, J.A., Stratmann, R.E., Burant, J.C., Dapprich, S., Millam, J.M., Daniels, A.D., Kudin, K.N., Strain, M.C., Farkas, O., Tomasi, J., Barone, V., Cossi, M., Cammi, R., Mennucci, B., Pomelli, C., Adamo, C., Clifford, S., Ochterski, J., Petersson, G.A., Ayala, P.Y., Cui, Q., Morokuma, K., Malick, D.K., Rabuck, A.D., Raghavachari, K., Foresman, J.B., Cioslowski, J., Ortiz, J.V., Stefanov, B.B., Liu, G., Liashenko, A., Piskorz, P., Komaromi, I., Gomperts, R., Martin, R.L., Fox, D.J., Keith, M.A., Al-Laham, A., Peng, C.Y., Nanayakkara, A., Gonzalez, C., Challacombe, M., Gill, P.M.W., Johnson, B.G., Chen, W., Wong, M.W., Andres, J.L., Head-Gordon, M., Replogle, E.S., and Pople, J.A., GAUSSIAN 98, Rev. A.1, Pittsburgh (PA): Gaussian, Inc., 1998.
2. Syrkin, Ya.K. and Moiseev, I.I., Usp. Khim., 1958, vol. 27, no. 8, pp. 717–730.
3. Salomaa, P. and Linnantie, R., Acta Chem. Scand., 1960, vol. 14, pp. 586–591.
4. Vinnik, M.I. and Librovich, N.B., Izv. Akad. Nauk SSSR, Ser. Khim., 1975, no. 10, pp. 2211–2217.
5. Vinnik, M.I. and Librovich, N.B., Izv. Akad. Nauk SSSR, Ser. Khim., 1976, no. 7, pp. 1480–1485.