Comment on `Charged Particle Ratio Fluctuation as a Signal for   Quark-Gluon Plasma' and `Fluctuation Probes of Quark Deconfinement'
  Charge fluctuations studied on event-by-event basis have been recently suggested to provide a signal of the equilibrium quark-gluon plasma produced in heavy-ion collisions at high energies. It is argued that the fluctuations generated at the early collision stage when the energy is released can fake the signal. 
Marek Gazdzicki and Stanislaw Mrowczynski