Isabelle Catto, Claude Le Bris, Pierre-Louis Lions On some periodic Hartree-type models for crystals (262K, postcript) ABSTRACT. We continue with this paper our study of the thermodynamic limit for various models of Quantum Chemistry, focusing We continue with this paper our study of the thermodynamic limit for various models of Quantum Chemistry, this time focusing on the Hartree and the restricted Hartree model. For the restricted Hartree model, we prove the existence of the thermodynamic limit for the energy per unit volume. We also define a periodic problem associated to the hartree model, and we prove that it is well-posed.