@article{VTAMU_2019_24_127_a6,
     author = {V. I. Fomin},
     title = {About a complex operator exponential function of a complex operator argument main property},
     journal = {Vestnik rossijskih universitetov. Matematika},
     pages = {324--332},
     year = {2019},
     volume = {24},
     number = {127},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VTAMU_2019_24_127_a6/}
}