1. Nonlinearity in Condensed Matter, Ed. by A. R. Bishop, R. Ecke, and S. Gubernatis (Springer, Berlin, 1993).
2. Nonlinear Coherent Structures in Physics and Biology, Ed. by K. H. Spatchek and F. G. Martens (Plenum, New York, 1994).
3. Fluctuation Phenomena: Disorder and Nonlinearity, Ed. by A. R. Bishop, S. Jiménez, and L. Vázquez (World Scientific, Singapore, 1995).
4. B. A. Ivanov and A. K. Kolezhuk, Fiz. Nizk. Temp. 21(4), 355 (1995) [Low Temp. Phys. 21, 275 (1995)].
5. A. M. Kosevich, B. A. Ivanov, and A. S. Kovalev, Nonlinear Waves of Magnetization. Dynamic and Topological Solitons (Naukova Dumka, Kiev, 1983).