@article{34896,
  author = {Benjamin and Amit Agrawal and Ian Anderson and Andrew Herzing and Henri Lezec and Jabez McClelland and John Unguris},
  title = {Electron Vortex Beams with High Quanta of Orbital Angular Momentum},
  year = {2011},
  number = {331},
  month = {2011-01-14},
  publisher = {Science},
  url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=906991},
  language = {en},
}