D. Eberly. Ridges in Image and Data Analysis. Computational Imaging and Vision. Springer Netherlands, 2010.

K. Hormann. Barycentric coordinates for arbitrary polygons in the plane. 2005.

Andrew Nealen. An as-short-as-possible introduction to the least squares, weighted least squares and moving least squares methods for scattered data approximation and interpolation. 01 2004.

Steven Parker, Peter Shirley, Yarden Livnat, Charles Hansen, and Peter-Pike Sloan. Interactive ray tracing for isosurface rendering. In Proceedings of the Conference on Visualization '98, VIS '98, page 233–238, Washington, DC, USA, 1998. IEEE Computer Society Press.

R. Peikert and M. Roth. The "parallel vectors" operator-a vector field visualization primitive. Proceedings Visualization '99 (Cat. No.99CB37067), pages 263–532, 1999.

R. Peikert and F. Sadlo. Height ridge computation and filtering for visualization. In Proceedings of IEEE Pacific Visualization Symposium (PacificVIS), pages 119–126, 2008.