by Smaliy, R. V., Chaykovskaya, A. A., Yurchenko, A. A., Lakhtadyr, A. I., Yurchenko, S. A., Shtil, N. A., Kostuk, A. N.
Published in Chemistry of heterocyclic compounds (New York, N.Y. 1965) (01.12.2011)

by Tsekhmistro, R.I., Kostuk, A.N.
Published in 2007 International Workshop on Optoelectronic Physics and Technology (01.06.2007)