1. The use of structural steel in building;British Standard 449,1939
2. Stahl im Hochbau;DIN 1050;Berechnungsgrundlagen für Stahlbauten,1936
3. Specification for structural steel buildings;Load and Resistance Factor Design LRFD,1986
4. Eurocode 3, Design of steel structures. CEN, European Committee for Standardization, ENV 1993-1-1.
5. Determination of design resistances from tests;Eurocode 3,1993