References
- Donath , V and Renelt , E . 1985 . ‘The TIG automatic circumferential welding machine ZIS 13–50’ . ZIS-Communications , 27 ( 6 ) : 663 – 669 .
- Renelt , E and Donath , V . 1985 . ‘The automatic TIG-welding of fixed pipe . ZIS-Communications , 27 ( 6 ) : 651 – 658 .
- Henschler , P , Renelt , E and Urban , M . 1986 . ‘Circumferential seam welding in plant assembly’ . ZIS-Communications , 28 ( 8 ) : 881 – 887 .