1. F. Bonetto, J. L. Lebowitz, and L. Rey-Bellet, in Mathematical Physics 2000, Ed. by A. Fokas, A. Grigoryan, T. Kibble, and B. Zegarlinski (Imperial College Press, London, 2000), pp. 128–150.
2. S. Lepri, R. Livi, and A. Politi, Phys. Rep. 377, 1–80 (2003).
3. H. Spohn and J. L. Lebowitz, Commun. Math. Phys. 54 (2), 97–120 (1977).
4. C. Boldrighini, A. Pellegrinotti, and L. Triolo, J. Stat. Phys. 30, 123–155 (1983).
5. T. V. Dudnikova, A. I. Komech, and H. Spohn, J. Math. Phys. 44 (6), 2596–2620 (2003).