Ordering and viscoelastic relaxation in multiarm star polymer melts D. Vlassopoulos, T. Pakula, G. Fytas, J. Roovers, K. Karatasos and N. Hadjichristidis Europhys. Lett., 39 6 (1997) 617-622 Published online: 01 September 2002 DOI: 10.1209/epl/i1997-00403-3