1. Commission Electrotechnique Internationale (IEC), Electroacoustics -Sound level meters -Part 1: Specifications, Standard No. IEC 61672-1:2002, Geneva: 2002;
2. Sanitary norms of production noise, ultrasound and infrasound, Standard No SSN 3.3.6.037-99, 1999, Kiev;
3. V.T. Grinchenko, I.V. Vovk, V.T. Matsipura: Fundamentals of acoustics, Naukova Dumka, Kiev 2007;
4. Poklyatskii A.G.: Parameters of the process of friction stir welding of sheet aluminium alloys, Vestnik of PSU, Series B. Industry, Applied sciences, Mechanical engineering and materials science, No. 11, pp. 53-58, 2015;
5. Ishchenko A.Ya., Poklyatskii A.G.: Tool for friction stir welding of aluminium alloys, Patent of Ukraine № 54096, Bul. № 20, Publ. 25.10.2010;