@inproceedings{TheiselWeinkaufHegeetal.2004, author = {Holger Theisel and Tino Weinkauf and Hans-Christian Hege and Hans-Peter Seidel}, title = {Grid-independent detection of closed stream lines in 2D vector fields}, booktitle = {Proc. Vision, Modeling and Visualization 2004}, pages = {421 -- 428}, year = {2004}, }