Theisel, Holger Computer Graphics, MPI for Informatics, Max Planck Society;
Seidel, Hans-Peter Computer Graphics, MPI for Informatics, Max Planck Society;
Theisel, H. (2002). Designing 2D Vector Fields of Arbitrary Topology. In EUROGRAPHICS 2002 (pp. 595-604). Oxford, UK: Blackwell.