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We have studied the Dalitz plot of the e+ e- --> pi0 pi0 gamma eventscollected at SQRT(s) ~ M(phi) with the KLOE detector. In the dipion invariantmass (Mpp) region below 700 MeV, the process under study is dominated by thenon-resonant process e+ e- --> omega pi0 with omega --> pi0 gamma whereas, forhigher Mpp values, the radiative phi decay to the f0(980) is the dominantmechanism. Different theoretical models are used to fit the Dalitz plot, takingalso into account a possible contribution of the sigma(600). For each model, weextract the f0(980) mass and its coupling to pipi, KKbar and to the phi.Comment: 21 pages, 15 figures, 5 tables, submitted to European Physics Journal

Dalitz plot analysis of e+e-→π0π0γ events at $\sqrt{s} \simeq{M}_{\phi}$ with the KLOE detector