Direct observation of domain wall excitations in symmetric diblock copolymer melts at and above the order-disorder transitionH. Montes, M. Monkenbusch, L. Willner, S. Rathgeber, D. Richter, L. J. Fetters and B. FaragoEurophys. Lett., 58 3 (2002) 389-394DOI: https://doi.org/10.1209/epl/i2002-00651-7