@inbook {672,
	title = {Visualizing Symmetric Indefinite 2D Tensor Fields Using the Heat Kernel Signature},
	booktitle = {Visualization and Processing of Higher Order Descriptors for Multi-Valued Data},
	year = {2015},
	pages = {257{\textendash}267},
	publisher = {Springer},
	organization = {Springer},
	author = {Zobel, Valentin and Reininghaus, Jan and Hotz, Ingrid}
}
