TY - JOUR AU - James Thompson AU - S. Rainville AU - D. Pritchard BT - Nature DA - 2004-07 DO - 10.1038/nature02682 PY - 2004 SP - 58 EP - 61 T2 - Nature TI - Cyclotron frequency shifts arising from polarization forces UR - http://www.nature.com/doifinder/10.1038/nature02682 VL - 430 SN - 0028-0836 ER -