This is a collection of pointers to descriptions of transformation problems. It would be interesting to see solutions for these problems in different transformation systems. * Example for the [[http://sosym.dcs.kcl.ac.uk/events/mtip/][Model Transformations in Practice Workshop]] * [[http://sosym.dcs.kcl.ac.uk/events/mtip/long_cfp.pdf][call for papers with specification]] * [[http://www-106.ibm.com/developerworks/library/l-spark.html][Charming Python: Parsing with the Spark module]] * The [[http://catamaran.labs.cs.uu.nl/dist/stratego/strategoxt-manual-unstable-latest/manual/pt02.html][tutorial part]] of the [[http://catamaran.labs.cs.uu.nl/dist/stratego/strategoxt-manual-unstable-latest/manual][Stratego/XT Manual]] features transformations on the tiny imperative language TIL to demonstrate various types of transformations.