Hello The most of the papers the Wikipedia page links to should be publicly accessible, I've just checked the ones hosted at Utrecht University (e.g the Generic Haskell manual and Andres L\ohs thesis). Ralf Hinze has changed universities, so the link to http://www.informatik.uni-bonn.de/~ralf/publications/ICFP04.pdf unfortunately has gone, you could try asking him for a copy as it is not online at his new address: http://www.comlab.ox.ac.uk/people/publications/date/Ralf.Hinze.html. It looks like the Generics code hosted at Haskell.org is somewhat in transit as the machine hosting it have been swapped out. The haskellwiki page - http://www.haskell.org/haskellwiki/GPBench - points here (now defunct): Darcs repository: http://darcs.haskell.org/generics That repository is temporarily hosted here: http://old-darcs.well-typed.com/generics/ The comparison suite with examples for SYB, PolyP, Smash etc etc is in the folder 'comparsion': http://old-darcs.well-typed.com/generics/comparison/ Best wishes Stephen