Ugo Dal Lago, Martin Hofmann. A Semantic Proof of Polytime Soundness of Light Affine Logic. In Edward A. Hirsch, Alexander A. Razborov, Alexei L. Semenov, Anatol Slissenko, editors, Computer Science - Theory and Applications, Third International Computer Science Symposium in Russia, CSR 2008, Moscow, Russia, June 7-12, 2008, Proceedings. Volume 5010 of Lecture Notes in Computer Science, pages 134-145, Springer, 2008. [doi]