@inbookZiegler_2003, place=Berlin, Heidelberg, series=Lecture Notes in Computer Science, title=Fast Relative Approximation of Potential Fields, volume=2748, DOI=10.1007/978-3-540-45078-8_13, booktitle=Lecture Notes in Computer Science, publisher=Springer, author=Ziegler, Martin, editor=Dehne, F. and Sack, JR. and Smid, M. and Algorithms and Data Structures. WADS 2003Editors, year=2003, collection=Lecture Notes in Computer Science