References
- Buksbaum , B I and Bustovoi , I R . 1965 . ‘Reduction of the crater length in welding straight seam large diameter pipes’ . Avt Svarka , : 56 – 67 . (8)
- Stepnov , M N . 1972 . ‘Statistical processing the results of mechanical tests’ , Moscow : Publ Metallurgiya .