@article { WOS:000175709100001,
	title = {Direct observation of the phonon energy in a Bose-Einstein condensate by tomographic imaging},
	journal = {PHYSICAL REVIEW LETTERS},
	volume = {88},
	number = {22},
	year = {2002},
	month = {JUN 3},
	pages = {220401},
	issn = {0031-9007},
	doi = {10.1103/PhysRevLett.88.220401},
	author = {Ozeri, R and Steinhauer, J and Katz, N and Davidson, N}
}
