A direct comparison of surface and bulk chain-relaxation in polystyrene Wen-li Wu, Sharadha Sambasivan, Chia-Ying Wang, W. E. Wallace, J. Genzer and D. A. Fischer Eur. Phys. J. E, 12 1 (2003) 127-132 Published online: 14 October 2003 DOI: 10.1140/epje/i2003-10050-6