2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/82413Notes from 11 October 2004 lecture presented at the Joint Institute for Nuclear Astrophysics R-Matrix School at Notre Dame University.Notes from 11 October 2004 lecture presented at the Joint Institute for Nuclear Astrophysics R-Matrix School at Notre Dame University (7 pages)Nuclear Theorytext