1. EN1993-1-8:2004, Eurocode 3, Design of steel structures, Part 1.8: Design of joints. 2006
2. EN1993-1-1:2005, Eurocode 3, Design of steel structures, Part 1.1. General rules and rules for buildings. 2006
3. BS 5950-1:2000, Structural use of steelwork in building, Part 1: Code of practice for design — Rolled and welded sections. 2000
4. DIN 18 800 Teil 1, Stahlbauten: Bemessung und Konstruktionen. 1990 [in German]
5. NEN 6772. Staalconstructies TGB 1990–Verbindingen, NNI. 1991 [in Dutch]