@article {NRRT04, title = {\newblock{A Declarative Framework for Reasoning on Spatio-temporal Data}}, year = {2004}, note = {\newblock{Book chapter in Spatio-temporal databases, flexible querying and reasoning, R. de Caluwe, G. de Tr{\`e}, G. Bordogna editors, Physica Verlag }.}, author = {Mirco Nanni and Alessandra Raffaet{\`a} and Chiara Renso and Franco Turini} }