Perelló, Carles2026-03-132023-12-299788499657073https://pepa.une.es/handle/123456789/77168Libro digitalp. 467CC BY-NC-SA 4.0 Internacional (Atribución-NoComercial-CompartirIgual)https://creativecommons.org/licenses/by-nc-sa/4.0/MatemáticasopenAccess