Partial coherence in the core–halo picture of Bose–Ein stein n-particle correlations T. Csörgő, B. Lörstad, J. Schmidt-Sørensen and A. Ster Eur. Phys. J. C, 9 2 (1999) 275-281 Published online: 20 May 1999 DOI: 10.1007/s100529900024