@inproceedings{7900, author = {{Gyapay, Szilvia and Heckel, Reiko and Varró, Dániel}}, booktitle = {{Proceedings of the First International Conference on Graph Transformation (ICGT 2002), Barcelona (Spain)}}, pages = {{120--134}}, publisher = {{Springer}}, title = {{{Graph Transformation with Time: Causality and Logical Clocks}}}, volume = {{2505}}, year = {{2002}}, }