G. Antoniou and F. Van-harmelen, A Semantic Web Primer, 2004.

D. Biber, S. Johansson, G. Leech, S. Conrad, and E. Finegan, Longman grammar of spoken and written English, 1999.

D. Damljanovic, M. Agatonovic, and H. Cunningham, Identification of the question focus: Combining syntactic analysis and ontology-based lookup through the user interaction, Language Resources and Evaluation Conference (LREC, 2010.

D. R. Dowty, R. E. Wall, and S. Peters, Introduction to Montague Semantics, 1981.
DOI : 10.1007/978-94-009-9065-4

N. E. Fuchs, K. Kaljurand, and G. Schneider, Attempto Controlled English meets the challenges of knowledge representation, reasoning, interoperability and user interfaces, FLAIRS Conference, pp.664-669, 2006.

P. Haase, J. Broekstra, A. Eberhart, and R. Volz, A Comparison of RDF Query Languages, ) Int. Semantic Web Conf, pp.502-517, 2004.
DOI : 10.1007/978-3-540-30475-3_35

P. Hitzler, M. Kr?akr?-kr?a-¶tzsch, and S. Rudolph, Foundations of Semantic Web Technologies, 2009.

P. Y. Hsu and D. S. Jr, Improving SQL with generalized quantifiers, Int. Conf. Data Engineering, pp.298-305, 1995.

V. Lopez, V. Uren, E. Motta, and M. Pasin, AquaLog: An ontology-driven question answering system for organizational semantic intranets, Web Semantics: Science, Services and Agents on the World Wide Web, vol.5, issue.2, pp.72-105, 2007.
DOI : 10.1016/j.websem.2007.03.003

R. Montague, Universal grammar, Theoria, vol.26, issue.3, pp.373-398, 1970.
DOI : 10.1111/j.1755-2567.1970.tb00434.x

J. Pérez, M. Arenas, and C. Gutierrez, Semantics and complexity of SPARQL, ) Int. Semantic Web Conf, pp.30-43, 2006.

R. Schwitter, K. Kaljurand, A. Cregan, C. Dolbear, and G. Hart, A comparison of three controlled natural languages for OWL 1.1, Workshop on OWL: Experiences and Directions (OWLED), 2008.

P. Smart, Controlled natural languages and the semantic web. Tech. rep, 2008.