%0 Journal Article %A V. I. Fomin %T About a complex operator exponential function of a complex operator argument main property %J Vestnik rossijskih universitetov. Matematika %D 2019 %P 324-332 %V 24 %N 127 %U http://geodesic.mathdoc.fr/item/VTAMU_2019_24_127_a6/ %G ru %F VTAMU_2019_24_127_a6