@inbook{237891,
  author = {Carl Williams},
  title = {From the Mise-en-pratique for Mass to the Future of Metrology for the SI},
  year = {2017},
  number = {196},
  month = {2017-12-01},
  publisher = {Proceedings of the International Summer School “Enrico Fermi” Vol 196, IOS Press, Amsterdam, -1},
  language = {en},
}