[Asnie, А. Е. 1982. Welding in a mixture of reactive gases. Kiev : Naukova Dumka, 1982.]Search in Google Scholar
[Lenivkin, V. А. 1989. Technical characteristics of welding arc in shielding gases. Moscow : Machine Building, 1989. Russo, L. V. 1984. Arc welding in inert gases. Leningrad : Shipbuilding, 1984.]Search in Google Scholar
[Nikolov , M. - Tonchev , G. - Kangalov , P. - Todorov , E. 2002. Research of the influence of amplitude of vibrations on the process of getting refurbishing surface in the medium of argon. In Autovehiculul, mediul simasina agficola AMMA 2002, Cluj-Napoca, 2002, pp. 23-26.]Search in Google Scholar
[Allo, Š. - Kro čko , V. - Žarnovsky, J. - Mat uš, M. 2014. Controlling and testing methods in the surface treatment. In Scientific thesis of University of Ruse, vol. 53, 2014, no. 1.1, pp. 105-110.]Search in Google Scholar
[Tonchev , G. P. 1989. Modern Technologies for Restoration of Components. Ruse : ’Angel Kanchev‘ University of Ruse, 1989, pp. 74-79.]Search in Google Scholar
[Tonchev , G. P. - Stanev , L. 1979. Study on the distribution of components of tractors YMZ - 6L and MTZ-80 by structural characteristics. In Scientific thesis of University of Ruse, vol. 21, 1979, no. 5, pp. 123-126.]Search in Google Scholar
[Tonchev , G. P. - Marinov, T. 1977. Statistical analysis of the structural characteristics of the components of automobiles MAZ-500 and KRAZ-256 with compounds of the roller bearing type. In Scientific thesis of University of Ruse, vol. 19, 1977, no. 7, pp. 45-51.]Search in Google Scholar