@conference { WSH:2001,
	title = {Tracking Closed Streamlines in Time-Dependent Planar Flows},
	booktitle = {Vision, Modeling, and Visualization 2001},
	year = {2001},
	pages = {447 {\textendash} 454},
	publisher = {Aka},
	organization = {Aka},
	address = {Berlin},
	author = {Wischgoll, T. and Gerik Scheuermann and Hans Hagen},
	editor = {Ertl, T. and Girod, B. and Niemann, H. and Seidel, H.-P.}
}
