@inproceedings{JW1999,
               author = {J. Gerlach, W. Rosenstiel},
               title = {Transformationale Optimierung von Entwurfsdarstellungen der algorithmischen Ebene},
               booktitle = {WSI 99-19},
               year = {1999},
               address = {Wilhelm-Schickard-Institut, Universität Tübingen}
}