N. Beucher, MAMBA documentation (MambaApi Reference Manual) Web documents, 2009.

N. Beucher and S. Beucher, Hierarchical Queues: general description and implementation in MAMBA Image library. http://www.mamba-image.org / CMM-Armines-Mines ParisTech publication
URL : https://hal.archives-ouvertes.fr/hal-00835024

S. Beucher, Segmentation d'images et morphologie mathématique Doctorate thesis, Paris School of Mines, pp.23-24, 1990.

S. Beucher, Numerical residues Image and Vision Computing 25, ISMM05 Special Issue, pp.405-415, 2007.

S. Beucher, About a problem of definition of the geodesic erosion. CMM/Mines ParisTech publication, 2011.
URL : https://hal.archives-ouvertes.fr/hal-01403947

S. Beucher, This operator compares the value of each pixel of image 'imIn' with the value of its neighbor in direction given by 'nb'. If the values are different, the pixel is unchanged. Otherwise, it takes value 0 This operator works on hexagonal or square 'grid' and 'edge' is set to FILLED by default. This operator works for 8-bit and 32-bit images, CMM/Mines ParisTech publication, 2012.