Multiplicity dependence of Bose-Einstein correlations in   antiproton-proton reactions: a discussion of possible origins
  The observed pronounced multiplicity dependence of correlation functions in hadron-hadron reactions and in particular of Bose-Einstein correlations provides information about underlying physics. We discuss in this contribution several interpretations, giving special attention to the string model for Bose-Einstein correlations of Andersson and Hofmann, as well as the core-halo picture of Csorgo, Lorstad and Zimanyi. 
B. Buschbeck and H.C. Eggers