1. J. Charles S. Bernhardson The duplex stainless steels: materials to meet your needs Duplex Stainless Steels '91 Conference Beaune, France 3 48
2. J. Charles Why and where duplex stainless steels Duplex Stainless Steel '97 Conf. Maastricht, the Netherlands 29 42
3. J. Charles 10 years later, obviously duplex grades in industrial applications look like a success story Duplex Stainless Steels 2000 Conference Venice, Italy 1 12
4. O. Doble T. Havn Lean Duplex Stainless Steel for structural applications Duplex Stainless Steels '07 Conf. Grado, Italy
5. J. Charles Past, present and future of duplex stainless steels Duplex Stainless Steels'07 Conf. Grado, Italy