Dynamically-reduced complexity implementation of echo cancelers. - Vijay K. Madisetti; David G. Messerschmitt; Niklas Nordström (ICASSP, 1986)

Biased anisotropic diffusion: a unified regularization and diffusion approach to edge detection. - Niklas Nordström (Image Vis. Comput., 1990)

Minimization of Energy Functional with Curve-Represented Edges. - Niklas Nordström (Geometry-Driven Diffusion in Computer Vision, 1994)