Diffusion in semi-dilute polymer solutions. A complementary experiment T. Csiba, G. Jannink, D. Durand, R. Papoular, A. Lapp, L. Auvray, F. Boué, J. P. Cotton and R. Borsali J. Phys. II France, 1 3 (1991) 381-396 DOI: 10.1051/jp2:1991175