TY - JOUR AU - D. Harber AU - Heather Lewandowski AU - J. McGuirk AU - Eric Cornell BT - Physical Review A DA - 2002-11 DO - 10.1103/PhysRevA.66.053616 PY - 2002 T2 - Physical Review A TI - Effect of cold collisions on spin coherence and resonance shifts in a magnetically trapped ultracold gas VL - 66 SN - 1050-2947 ER -