1. Fine Symposium;Gibbs,1991
2. Ultrafine Grained Steel;Weng,2003
3. The Effect of Chemistry on the Formation of Ultrafine Ferrite in Steel.
4. Proc. Int. Conf. Phys. Metal. Thermomech. Process. Steel Other Mater.;Yada,1988
5. H.Yada, Y. Matsumura, K. Nakajima, United State Patent No. 4,466,842, August 21, 1984.