Professor Jongbae Hong published a review article entitled "Solitary Waves in the Granular Chain" in Physics Reports as a corresponding author on June 3, 2008. It contains introduction on soliton and solitary wave, propagating characteristics of the solitary waves in the granular chain, and possible applications for impulse protector and so on. You may get a copy of this article (PDF file) by asking to Prof. J. Hong.