1. Hrivnak, I. 1979. “‘Weldability of steels’”. Publ ALFA Bratislava.
2. Pilarczyk, J. 1977. “‘Metallurgy of welding’”. Warsaw: Publ Warsaw Polytechnic.
3. Makarov, E L. 1981. “‘Cold cracking in the welding of high strength steels’”. Publ Mashinostroyene.
4. Pohobnaya, J K. 1972. “‘Gases in welded joints’”. Moscow: Publ Mashinostroyene.
5. Sluzalec, A. 1968. “‘Metallurgical and thermal welding processes’”. Publ Czestochowa Polytechnic.