Interference in the reaction e(+)e(-)->gamma pi(+)pi(-) and the search for the decay phi->gamma f(0)->gamma pi(+)pi(-)

We describe the interference between amplitudes e(+)e(-)->gamma pi(+)pi(-) and e(+)e(-)->phi-->gamma f(0)-->gamma pi(+)pi(-), here the f(0) meson is considered in the framework of the four-quark model and the model of the scalar <K(K)over bar> molecule. The general expressions for the differential cross section with the radiative corrections and two angle cuts are given. The interference patterns are obtained in tile spectrum of the differential cross section by the energy of the photon and in the full cross section by the energy of the beams.