@article{TUW-207747, author = {Taentzer, Gabriele and Ermel, Claudia and Langer, Philip and Wimmer, Manuel}, title = {A fundamental approach to model versioning based on graph modifications: from theory to implementation}, journal = {Software and Systems Modeling}, year = {2012}, volume = {tbd}, pages = {1--33}, url = {http://link.springer.com/article/10.1007/s10270-012-0248-x}, doi = {10.1007/s10270-012-0248-x} }