Dynamics of topological solitons in two-dimensional ferromagnets D. D. Sheka, C. Schuster, B. A. Ivanov and F. G. Mertens Eur. Phys. J. B, 50 3 (2006) 393-402 Published online: 05 May 2006 DOI: 10.1140/epjb/e2006-00153-6