@INPROCEEDINGS{ESTLERETAL11,
  	author = {H.-Christian Estler and Heike Wehrheim},
  	title = {Heuristic Search-Based Planning for Graph Transformation Systems},
  	booktitle = {Proceedings of the Workshop on Knowledge Engineering for Planning and Scheduling (KEPS)},
	pages = {54--61}
  	year = {2011},
}