1. GOST 19299-73, “Apparatus for measurements of surface roughness by the profile method. Profilographs. Types. Basic parameters” (1973).
2. GOST 19300-73, “Apparatus for measurements of surface roughness by the profile method. Profilometer contact systems. Types. Basic parameters” (1973).
3. B. S. Davydov, Basic Feeler Methods. Basis of a Feeler Method of Determining Surface Roughness [in Russian], Moscow, Standartgiz (1959).
4. A. N. Kartasheva, Tr. Vses. Nauchno. Tekh. Issled. Inst. Komitet. Standart. Izmeritel. Pribor., 4th ed. [in Russian], Moscow, Standartgiz (1960).
5. V. A. Egorov, Optical and Feeler Instruments for Measurements of Surface Roughness [in Russian], Mashinostroenie, Moscow (1965).