@book{23839, author = {Thomas, Wolfgang. and Weil, Pascal. and SpringerLink (Online service)}, title = {STACS 2007}, publisher = {Springer-Verlag Berlin Heidelberg,}, year = {2007.}, series = {Lecture Notes in Computer Science,}, address = {Berlin, Heidelberg :}, url = {http://dx.doi.org/10.1007/978-3-540-70918-3} }