@article{Gun18a,
  author = {G{\"u}nther, Tobias and Theisel, Holger},
  title = {The State of the Art in Vortex Extraction},
  journal = {Computer Graphics Forum},
  year = {2018},
  volume = {37},
  issue = {6},
  pages = {149-173},
  doi = {10.1111/cgf.13319},
  url = {https://onlinelibrary.wiley.com/doi/abs/10.1111/cgf.13319}
}