@article{1217,
  author = {S. Rainville and James Thompson and D. Pritchard},
  title = {An Ion Balance for Ultra-High-Precision Atomic Mass Measurements},
  year = {2004},
  journal = {Science},
  volume = {303},
  pages = {334-338},
  month = {2005-01},
  issn = {0036-8075},
  url = {http://www.sciencemag.org/cgi/doi/10.1126/science.1092320},
  doi = {10.1126/science.1092320},
}