- Alessandra Di Pierro, Herbert Wiklicky, editors, Proceedings of the 4th International Workshop on Quantitative Aspects of Programming Languages, QAPL 2006, Vienna, Austria, April 1-2, 2006. Volume 164 of Electronic Notes in Theoretical Computer Science, Elsevier, 2006.
- Antonio Cerone, Herbert Wiklicky, editors, Proceedings of the Third Workshop on Quantitative Aspects of Programming Languages, QAPL 2005, Edinburgh, UK, April 2-3, 2005. Volume 153 of Electronic Notes in Theoretical Computer Science, Elsevier, 2006.