(2017-05-29) Harutyunyan, V. V.; Aleksanyan, E. M.; Badayan, A. H.; Grigoryan, N. E.; Baghdasaryan, V. S.; Sahakyan, A. A.; Gavalyan, V. B.; Baghramyan, V. V.; Sargsyan, A. A.; A.I. Alikhanian National Science Laboratory, Yerevan Physics Institute, 0036 Yerevan, Armenia; Institute of General and Organic Chemistry of Armenian National Academy of Sciences; Yerevan, Armenia; vharut@mail.yerphi.am
