A. Ballows, H. Truper, M. Dworkin, and W. Harder, The prokaryotes, a handbook on the biology of bacteria: Ecophysiology, isolation, identification, applications, 1992.

P. Bosc and O. Pivert, SQLf: A relational database language for fuzzy querying, IEEE Transactions on Fuzzy Systems, vol.3, issue.1, pp.1-17, 1995.

P. Buche, C. Dervin, O. Haemmerlé, E. Surleau, and R. Thomopoulos, Carrying out the microbial risk in food products using the MIEL software: A new tool to query incomplete, imprecise and heterogeneously structured experimental data stored in a relational database, Proceedings of the International Conference on Predictive Modelling in Food, ICPMF'03, 2003.

F. Quimper, , pp.58-60

P. Buche, C. Dervin, O. Haemmerlé, and R. Thomopoulos, Fuzzy querying on incomplete, imprecise and heterogeneously structured data in the relational model using ontologies and rules, IEEE Transactions on Fuzzy Systems, vol.13, issue.3, pp.373-383, 2005.

P. Buche and O. Haemmerlé, Towards a unified querying system of both structured and semi-structured imprecise data using fuzzy views, Proceedings of the 8th international conference on conceptual structures, Lecture notes in artificial intelligence #1867 Darmstadt, pp.207-220, 2000.

T. Cao, Foundations of order-sorted fuzzy set logic programming in predicate logic and conceptual graphs, 1999.

D. Dubois and H. Prade, Possibility theory-An approach to computerized processing of uncertainty, 1988.

D. Dubois and H. Prade, Tolerant fuzzy pattern matching: An introduction, Fuzziness in Database Management Systems, pp.42-58, 1995.

D. Dubois, H. Prade, and J. Rossazza, Vagueness, typicality and uncertainty in class hierarchies, International Journal of Intelligent Systems, vol.6, pp.167-183, 1991.

J. Galindo, J. Cubero, O. Pons, and J. Medina, A server for fuzzy SQL queries, Proceedings of the 1998 workshop FQAS'98 (Flexible query-answering systems), pp.161-171, 1998.

M. Genesereth, A. Keller, and O. Duschka, Infomaster: An information integration system, Proceedings of SIGMOD 97, pp.539-542, 1997.

D. Genest and E. Salvat, A platform allowing typed nested graphs: how CoGITo became CoGITaNT, Proceedings of the 6th international conference on conceptual structures (ICCS'1998), pp.154-161, 1998.

S. Ginsburg and R. Hull, Order dependency in the relational model, Theoretical Computer Science, issue.26, pp.149-195, 1983.

F. Goasdoué, V. Lattes, and M. Rousset, The use of CARIN language and algorithms for information integration: The PICSEL system, International Journal of Cooperative Information Systems, vol.4, issue.9, pp.383-401, 2000.

J. Ireland and A. Moller, Review of international food classification and description, Journal of Food Composition and Analysis, vol.13, issue.4, pp.529-538, 2000.

B. Leporq, J. Membré, C. Dervin, P. Buche, and J. Guyonnet, The "Sym'Previus" software, a tool to support decisions to the foodstuff safety, International Journal of Food Microbiology, vol.100, issue.1-3, pp.231-237, 2005.

S. Morton, Conceptual graphs and fuzziness in artificial intelligence, 1987.

M. Mugnier and M. Chein, Polynomial algorithms for projection and matching, Proceedings of the 7th annual workshop on conceptual graphs, Lecture notes in artificial intelligence #754, pp.239-251, 1992.

M. Mugnier and M. Chein, Représenter des connaissances et raisonner avec des graphes. Revue d'intelligence Artificielle, vol.10, pp.7-56, 1996.

J. Ordille, A. Levy, and A. Rajaraman, Querying heterogeneous information sources using source descriptions, Proceedings of the international conference on very large data bases, pp.251-262, 1996.

H. Prade and C. Testemale, Generalizing database relational algebra for the treatment of incomplete or uncertain information and vague queries, Information Sciences, vol.34, pp.115-143, 1984.

F. Sebastiani, A probabilistic terminological logic for modelling information retrieval, Proceedings of the 17th annual international ACM-SIGIR conference on research and development in information retrieval, pp.122-130, 1994.

J. Sowa, Conceptual structures-Information processing in mind and machine, 1984.

R. Thomopoulos, P. Buche, and O. Haemmerlé, Different kinds of comparisons between fuzzy conceptual graphs, Proceedings of the 11th international conference on conceptual structures, ICCS'2003, pp.54-68, 2003.
URL : https://hal.archives-ouvertes.fr/hal-02676616

R. Thomopoulos, P. Buche, and O. Haemmerlé, Representation of weakly structured imprecise data for fuzzy querying. Fuzzy Sets and Systems, pp.111-128, 2003.
URL : https://hal.archives-ouvertes.fr/hal-02678897

J. Ullman, Principles of database and knowledge-base systems, 1988.

M. Umano, FREEDOM-0: a fuzzy database system, Fuzzy Information and Decision Processes, pp.339-347, 1982.

L. Zadeh, Fuzzy sets. Information and Control, vol.8, pp.338-353, 1965.

L. Zadeh, Fuzzy sets as a basis for a theory of possibility, Fuzzy Sets and Systems, vol.1, pp.3-28, 1978.

S. Zadrozny and J. Kacprzyk, Implementing fuzzy querying via the internet/WWW: Java applets, activeX controls and cookies, Proceedings of the workshop FQAS'98 (Flexible queryanswering systems, pp.358-369, 1998.