1. Data on the Web;Abiteboul,2000
2. Translations on a context-free grammar;Aho;Inf. Control,1971
3. An algebraic definition of attributed transformations;Bartha;Acta Cybern.,1982
4. A formal model for an expressive fragment of XSLT;Bex;Inf. Syst.,2002
5. Monadic second order logic and node relations on graphs and trees;Bloem,1997