1. Columbium as a micro-alloying element in steels and its effect on welding technology;Noren-Brandel,1963
2. The effect of small columbium additions to semi-killed medium-carbon steels;Beiser,1959
3. The influence of small niobium additions on the mechanical properties of commercial mild steels;Morrison;Journal of the Iron and Steel Institute,1963
4. The influence of small niobium additions on the properties of carbon-manganese steels;Morrison;Journal of the Iron and Steel Institute,1963
5. Some properties of niobium-treated mild steel;De Kazinczy;Jernkont Ann.,1963