A 3D 6-subiteration curve thinning algorithm based on <i>P</i>-simple points.

Christophe Lohou Gilles Bertrand A 3D 6-subiteration curve thinning algorithm based on <i>P</i>-simple points. 198-228 2005 151 Discrete Applied Mathematics 1-3 http://dx.doi.org/10.1016/j.dam.2005.02.030 db/journals/dam/dam151.html#LohouB05