1. D. Kinderlehrer: Nature, Vol. 446 (2007), No. 9, pp.995-996.
2. H. Wang, G.Q. Liu and J.H. Luan : Acta Phys Sin, Vol. 61 (2012), No. 4, p.048102(1-4).
3. D.J. Rowenhorst, A.C. Lewis and G. Spanos: Acta. Mater., Vol. 58 (2010), No. 16, pp.5511-5519.
4. H. Wang, G.Q. Liu, X.Y. Song and J.H. Luan: EPL, Vol. 96 (2011), p.38003(1-5).
5. D. Aboav: Metallography, Vol. 3 (1970), pp.383-390.