TY - JOUR AU - d, M Harber AU - Lewandowski, H AU - McGuirk, J AU - Cornell, Eric C2 - Physical Review A (Atomic, Molecular and Optical Physics) DA - 2002-01-01 00:01:00 LA - en M1 - 66 PB - Physical Review A (Atomic, Molecular and Optical Physics) PY - 2002 TI - Effect of cold collisions on spin coherence and resonance shifts in a magnetically trapped ultra-cold gas ER -