@Book{RANME20161147819, title = "La Seguridad Social", author = "Alonso Olea, Manuel, 1924-2003", publisher = "Madrid : Moneda y Cr\'{e}dito", editor = "Moneda y Cr\'{e}dito", URL = "http://bibliotecavirtual.ranm.es/ranm/es/consulta/registro.do?id=16781", year = "1974", }