1. Grogoryan, D.V., Kazaryan, A.Ts., Martirosyan, G.T., and Babayan, A.T., Zh. Org. Khim., 1970, vol. 6, p. 1390.
2. Babayan, A.T., Martirosyan, G.T., Grogoryan, D.V., and Grigoryan, E.A., Izv. Akad. Nauk Arn. SSR, Khim. N., 1963, vol. 16, p. 449.
3. Paal, C. and Hermann, C., Ber., 1889, vol. 22, p. 3076. https://doi.org/10.1002/cber.188902202238
4. Morrison, A.L. and Rinderknecht, H., J. Chem. Soc., 1950, p. 1478. https://doi.org/10.1039/JR9500001478
5. Morrison, A.L. and Rinderknecht, H., J. Chem. Soc., 1950, p. 1478. https://chem.nlm.nih.gov/chemidplus/sid/0000627372