1. Horváth S., Czifra Á. Micro-geometry design guidelines for technical surfaces (in Hungarian) XX. Nemzetközi Gépészeti Találkozó — OGÉT, Kolozsvár, Romania, 19–22 April 2012, pp. 189–192.
2. Barányi I., Kalácska G., Czifra Á. Friction tests of technical plastics in function of roughness parameters (in Hungarian) XVII. Fiatal Műszakiak Tudományos Ülésszaka, Kolozsvár, Romania, 22–23 March 2012, pp. 31–34.
3. Horváth S., Czifra Á. The importance of waviness in study of micro-topography of cutting surface, DMC 2005, Development of Metal Cutting, Kosice, Slovakia, 12–13 September 2005, pp. H 1–4.
4. ISO 4287/1-1997: Geometrical Product Specifications (GPS) — Surface texture: Profile method — Terms, definitions and surface texture parameters.