@article{203631,
  author = {Edwin Williams},
  title = {Toward the SI system based on fundamental constants: weighing the electron},
  year = {2007},
  number = {56},
  month = {2007-04-01},
  publisher = {IEEE Transactions on Instrumentation and Measurement},
  url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=32366},
  language = {en},
}