978-3-527-60895-9 . (German) ^ Anderson, M.H.; Ensher, J.R.; Matthews, M.R.; Wieman, C.E. ; Cornell, E.A. (1995). "Observation of Bose–Einstein Condensation in a Dilute Atomic Vapor". Science 269 (5221): 198–201. Bibcode 1995Sci...269..198A . DOI : 10.1126/science.269.5221.198 . JSTOR   2888436 . PMID   17789847 . ^ Streater, R.F.; Wightman, A.S. (1989). PCT,