1. Mapping of small area of a surface;Sayles;J. Phys. E.,1976
2. Evaluation, revision and application of the NBS stylus/computer system for the measurement of surface roughness;Clayton Teague,1976
3. N.N. 1979, Le rugosimètre tridimensionnel pour une meilleure evaluation des états de surface. Centre technique des industries mécaniques. Saint-Etienne.
4. A three-dimensional measuring technique for surface asperities;Tsukada;Wear,1981
5. Wide range three-dimensional roughness measuring system;Bengtson;Prec. Eng.,1984