3.1 Abbott E. J. and Firestone F. A. Specifying Surface Quality. Mech. Eng. Vol. 55 p569 572.

3.2 Pesante M. Determination of Surface Roughness Typology by Means of Amplitude Density Curves. Ann. CIRP Vol. 12 p61 ( 1963).

3.3 Ehrenreich M. The Slope of the Bearing Area as a Measure of Surface Texture. Micro Technic XII p83 ( 1959).

3.4 Whitehouse D. J. The Parameter Rash Is There a Cure? Wear 83 p75 78 ( 1982).

3.5 Stout K. G. Development of a Basis for 3D Surface Roughness. EC ( 1996) Contract No. SMT4-CT98-2256.

3.6 Peklenik J. and Kubo M. A Basic Study of the Three Dimensional Assessment of the Surface Generated as a Manufacturing Surface. Ann. CIRP Vol. 16 p257 ( 1968).

3.7 Kubo M. and Peklenik J. An Analysis of Micro Geometric Isotropy for Random Surface Structures. Ann. CIRP Vol. 16 p235 ( 1968).

3.8 Raja J. Filtering of Surface Profiles - Past, Present and Future. Precision Engineering Proc. 1 ^st Int. Conf. on Prec. Eng. p99 ( 2000).

3.9 Najak P. R. Random Process Model of Rough Surfaces. Trans. ASME Vol. 93 p398 ( 1971).

3.10 Whitehouse D. J. and Phillips M. J. Two Dimensional (Areal) Properties of Random Surfaces. Philos. Trans. Roy. Soc. A 305 p441 448.

3.11 Whitehouse D. J. Fractal or Fiction. Wear 249 p345 353 ( 2001).