Bialynicki-Birula, Iwo Comment on "Relativistic Electron Vortices". [electronic resource] - Physical review letters 07 2017 - 029501 p. digital Publication Type: Letter; Comment ISSN: 1079-7114 Standard No.: 10.1103/PhysRevLett.119.029501 doi Subjects--Topical Terms: ElectronsQuantum Theory