  The purpose of this article is to present the thermodynamics of the
pseudospin-electron model in the case of the different type interactions
between pseudospins.
  First, we provide an overview of the results of works which deal with the
theoretical investigation of the pseudospin-electron model with the inclusion
of the direct pseudospin-pseudospin interaction (but without the electron
transfer).
  Second, we present the results of the investigation of the model in the case
of the absence of the direct pseudospin-pseudospin interaction and Hubbard
correlation, when interaction between pseudospins via conducting electron is
done.
