1. Ghoneim, K.M., El-Telbany, F., and Youssef, K., J. Indian Chem. Soc., 1986, vol. 86, no. 10, p. 914.
2. Erkin, A.V. and Krutikov, V.I., Zh. Obshch. Khim., 2005, vol. 75, no. 4, p. 677.
3. Erkin, A.V. and Krutikov, V.I., Zh. Obshch. Khim., 2006, vol. 76, no. 3, p. 501.
4. Hooper, H.O. and Bray, P.J., J. Chem.Phys., 1959, vol. 30, no. 4, p. 957.
5. Roth, B. and Strelitz, J.Z., J. Org. Chem., 1969, vol. 34, no. 4, p. 821.