Study of the phase separation in polymer solutions using the pair approximation of the CVM: analytical solution of the problem F. de J. Guevara-Rodríguez, F. Aguilera-Granja et Ryoichi KikuchiJ. Phys. II France, 4 4 (1994) 589-611DOI: https://doi.org/10.1051/jp2:1994150