@misc{indiciaedcb1a1397923,
  title = {The Topology of Three-Dimensional Symmetric Tensor Fields},
  author = {Lavin, Yingmei and Levy, Yuval and Hesselink, Lambertus},
  year = {1994},
  url = {https://ntrs.nasa.gov/citations/20000012389},
  note = {Source identifier: 20000012389}
}