Fibre and Polymer Technology, Royal Institute of Technology, KTH, SE-100 44 Stockholm, Sweden, Solid Mechanics, Mid Sweden University/FSCN, 85170 Sundsvall, Sweden, STFI-Packforsk AB, Box 5604, SE-114 86 Stockholm, Sweden, and Chemical Science and Engineering, Faculty of Engineering, Kobe University, Rokko, Nada, Kobe 657-8501, Japan (2008-05-23時点)