> Spectral Quadrangulation with Orientation and Alignment Control

http://www.graphics.rwth-aachen.de/index.php?id=149

> Quad-dominant remeshing

http://www.graphics.rwth-aachen.de/uploads/media/rtspqdr_04.pdf

> Anisotropic Quad-dominant remeshing

http://www.graphics.rwth-aachen.de/uploads/media/aniso.pdf