title: Comment on "Electromagnetic vortex fields, spin, and spin-orbit interactions in electron vortices".
authors: Institute of Solid State Physics, Vienna University of Technology, A-1040 Vienna, Austria and University Service Centre for Transmission Electron Microscopy, Vienna University of Technology, A-1040 Vienna, Austria and Ecole Centrale Paris, LMSSMat (CNRS UMR 8579), F-92295 Châtenay-Malabry, France.
authors: P
authors: P
authors: Schattschneider
authors: Department of Physics, University of Washington, Seattle, Washington 98195-1560, USA.
authors: J J
authors: JJ
authors: Rehr
authors: School of Physics, University of Melbourne, Parkville, Victoria 3010, Australia.
authors: L J
authors: LJ
authors: Allen