Lambertus Hesselink, Yuval Levy, Yingmei Lavin. The Topology of Symmetric, Second-Order 3D Tensor Fields. IEEE Trans. Vis. Comput. Graph., 3(1):1-11, 1997. [doi]
@article{HesselinkLL97,
title = {The Topology of Symmetric, Second-Order 3D Tensor Fields},
author = {Lambertus Hesselink and Yuval Levy and Yingmei Lavin},
year = {1997},
url = {http://www.computer.org/tvcg/tg1997/v0001abs.htm},
researchr = {https://researchr.org/publication/HesselinkLL97},
cites = {0},
citedby = {0},
journal = {IEEE Trans. Vis. Comput. Graph.},
volume = {3},
number = {1},
pages = {1-11},
}