@article{2822,
  author = {John Hall},
  title = {Learning from the time and length redefinitions, and the metre demotion},
  year = {2011},
  journal = {Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences},
  volume = {369},
  pages = {4090-4108},
  month = {10/2011},
  doi = {10.1098/rsta.2011.0239},
}