TY - JOUR AU - Edwards, Mark AU - Ruprecht, P AU - Burnett, K AU - Clark, W C2 - Physical Review A (Atomic, Molecular and Optical Physics) DA - 1996-01-01 LA - en M1 - 54 PB - Physical Review A (Atomic, Molecular and Optical Physics) PY - 1996 TI - Finding the Elementary Excitations of Bose-Condensed Neutral Atoms in a Trap ER -