Partial coherence in the core–halo picture of Bose–Ein stein n-particle correlations T. Csörgő, B. Lörstad, J. Schmidt-Sørensen and A. SterEur. Phys. J. C, 9 2 (1999) 275-281DOI: https://doi.org/epjc/v9/p275(epjc024)