Proposal of an Interoperability Model for Social Security Information Systems. - Francisco Delgado Azuara; Salvador Otón; Raúl Julian Ruggia; José Ramón Hilera; José M. Gutiérrez (ICEIS (2), 2013)

Improving Information System Interoperability in Social Sector Through Advanced Metadata. - Francisco Delgado Azuara; Salvador Otón; Raúl Julian Ruggia; José Ramón Hilera; Roberto Barchino (ISD, 2013)

Proposal of a controlled vocabulary to solve semantic interoperability problems in social security information exchanges. - Francisco Delgado Azuara; José Ramón Hilera González; Raúl Julian Ruggia (Libr. Hi Tech, 2013)

Enterprise Architecture for International Agreements in Social Security Institutions. - Salvador Otón; Antonio Moratilla; José-Amelio Medina; Francisco Delgado Azuara; Raúl Ruggia (ICEIS (2), 2018)

Using microdata for international e-Government data exchange: The case of social security domain. - Francisco Delgado Azuara; José Ramón Hilera; Raúl Ruggia; Salvador Otón; Héctor R. Amado-Salvatierra (J. Inf. Sci., 2021)