2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/19675In heterogeneous system, the correspondence between calculated and measured quantities, such as the conductivity or the resistivity, is not obvious since the former ones are local quantities whereas the latter ones are often average values over the sample. In this report, we show explicitly how the correspondence can be done in the case of magnetic multilayers.4 pages, 1 figureCondensed Mattertext