References
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- Mazel' , A G . 1975 . ‘Stability of arcing in manual arc welding with modulated current.’ . Svar Proiz , : 27 – 29 .
- Vomovitskii , I. N. 1977 . “ ‘Electric arc welding of non-rotating joints in pipes in a narrow gap.’ ” . In ‘Construction in power engineering, No. 6.’ , 9 – 12 . Moscow : Publ Energiya .
- 1982 . ‘Guiding technical materials for welding, heat treatment and inspection of tubular systems of boilers and pipelines in assembling and repair of equipment in thermal electric power stations, RTM-1S-81.’ , Moscow : Publ Energoizdat .