@article{rpbib:fuchs2008parallel,
 author = {Raphael Fuchs and Ronald Peikert and Helwig Hauser and Filip Sadlo and Philipp Muigg},
 title = {{Parallel Vectors Criteria for Unsteady Flow Vortices}},
 journal = {IEEE Transactions on Visualization and Computer Graphics},
 volume={14},
 number={3},
 year = {2008},
 pages = {615--626},
 issn = {1077-2626},
}