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In this talk I first present a short review of fluctuations in e + e − -annihilations. I then describe some new results on FD correlations. Experimental analyses of pp and ΛΛ correlations indicate a very small production radius. This result relies very strongly on comparisons with MC simulations. A study of the approximations and uncertainties in these simulations implies that it is premature to draw such a conclusion from the data.doi:10.1590/s0103-97332007000500003 fatcat:63garvkndzfghc4xram66nqlxi