@conference{121306,
  author = {David Wineland and C Weimer and John Bollinger},
  title = {Laser-Cooled Positron Source, Hyper-fine Interactions,},
  year = {1993},
  number = {76},
  month = {1993-01-01},
  publisher = {Antihydrogen Workshop  , Munich, GE},
  url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=105700},
  language = {en},
}