A.B. Nalbandyan Institute of Chemical Physics NAS RA,
Paruir Sevak str., 5/2 Paruyr Sevak St, Yerevan 0014, Armenia
David Hayrapetyan, david.hayrapetyan@rau.am, +37493934311
Paytsar Mantashyan, paytsar.mantashyan@gmail.com, +37493380236