1. ASME Boiler and Pressure Vessel Code, Section VIII, Divisions 1 and 2. American Society of Mechanical Engineers.
2. ASME Code for Pressure Piping, B31.1. American Society of Mechanical Engineers.
3. AD-Merkblätter, Technical rules for pressure vessels. Verband der Technischen Überwachungs-Vereine e. V., Essen (Germany). Edition July 2000.
4. DIN Standard 2505: Berechnung von Flanschverbindungen. Deutches Institut für Normung e.V., Berlin. Proposed edition from April 1990.
5. Rules for Pressure Vessels, issue 99-12. Published on behalf of Stoomwezen BV. The Hague: Sdu Publishers.