TY - JOUR AU - S. Rainville AU - James Thompson AU - D. Pritchard BT - Science DA - 2005-01 DO - 10.1126/science.1092320 PY - 2004 SP - 334 EP - 338 T2 - Science TI - An Ion Balance for Ultra-High-Precision Atomic Mass Measurements UR - http://www.sciencemag.org/cgi/doi/10.1126/science.1092320 VL - 303 SN - 0036-8075 ER -