  In this work we investigate temperature dependence of electronic structure of
system with strong electronic correlations and strong electron-phonon
interaction modeling cuprates in the frameworks of the three-band p-d-Holstein
model by a polaronic version of the generalized tight binding (GTB) method.
Within this approach the electronic structure is formed by polaronic
quasiparticles constructed as excitations between initial and final polaronic
multielectron states. Temperature effect is taken into account by occupation
numbers of local excited polaronic states and variations in the magnitude of
spin-spin correlation functions. Temperature increasing leads to broadening of
the spectral function peak at the top of the valence band, shift of the peak,
the decreasing of the peak intensity.
