Zoltán Horváth Viktória Zsók Andrew Butterfield Implementation and Application of Functional Languages, 18th International Symp osium, IFL 2006, Budapest, Hungary, September 4-6, 2006, Revised Selected Papers IFL Lecture Notes in Computer Science 4449 Springer 2007 978-3-540-74129-9 db/conf/ifl/ifl2006.html