@article{ANSS14a, author = "G. Aranda-L\'opez and S. Nieva and F. S\'aenz-P\'erez and J. S\'anchez-Hern\'andez", title = "R-SQL: An SQL Database System with Extended Recursion", journal = "Electronic Communications of the EASST", year = "2014", issn = "1863-2122", note = "In Press" }