Fernández-Rañada, Antonio2023-06-202023-06-201996-09-050028-083610.1038/383032a0https://hdl.handle.net/20.500.14352/58983© 1996 Nature Publishing Group.engjournal articlehttp://dx.doi.org/10.1038/383032a0http://www.nature.com/restricted access537ElectricidadElectrónica (Física)2202.03 Electricidad