3666 2012 2012 eng 15 29 incollection Springer 0 -- -- -- Efficient Computation of a Hierarchy of Discrete 3D Gradient Vector Fields Topological Methods in Data Analysis and Visualization II 10.1007/978-3-642-23175-9_2 Mathematics and Visualization yes David Günther Ronny Peikert Jan Reininghaus Helwig Hauser Steffen Prohaska Hamish Carr Tino Weinkauf Hans-Christian Hege Visual Data Analysis Visual Data Analysis in Science and Engineering Image Analysis in Biology and Materials Science Vergleichende Visualisierung Hege, Hans-Christian Prohaska, Steffen Visual and Data-centric Computing