2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/26495Lecture notes published in ''Magnetism goes nano'', Lecture Manuscripts of the 36th Spring School of the Institute of Solid State Research, edited by Stefan Bluegel, Thomas Brueckel, and Claus M. Schneider (Forschungszentrum Juelich, 2005).33 pages, 18 figuresMesoscale and Nanoscale Physicstext