1. Performance preorder and competitive equivalence

   • Flavio Corradini
   • Roberto Gorrieri
   • Marco Roccetti

   Pages: 805 - 835

2. Unconditional transfer in regulated rewriting

   • Henning Fernau

   Pages: 837 - 857

3. Easy sets and hard certificate schemes

   • Lane A. Hemaspaandra
   • Jörg Rothe
   • Gerd Wechsung

   Pages: 859 - 879