Saying Hello World with GrGen.NET - A Solution to the TTC 2011   Instructive Case
  We introduce the graph transformation tool GrGen.NET (www.grgen.net) by solving the Hello World Case of the Transformation Tool Contest 2011 which consists of a collection of small transformation tasks; for each task a section is given explaining our implementation. 
Sebastian Buchwald (Karlsruhe Institute of Technology (KIT)), Edgar   Jakumeit (Karlsruhe Institute of Technology (KIT))
cs.PL