Tracer Dispersion in a Polymer Solution Flowing Through a Double Porosity Porous Medium A. Paterson, A. d'Onofrio, C. Allain, J.P. Hulin, M. Rosen et C. Gauthier J. Phys. II France, 6 11 (1996) 1639-1654 DOI: 10.1051/jp2:1996153