2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/29272This paper contains the notes of lectures on the theory of interlayer exchange coupling presented at the 30-th Ferienschule of the Institut fuer Festkoerperforschung, Forschungszentrum Juelich, March 1999.RevTeX, 40 pages, 13 figures (17 ps files)Mesoscale and Nanoscale PhysicsMaterials Sciencetext