<?xml version="1.0" encoding="UTF-8" ?>
<referencetext xmlns="http://eprints.org/ep2/data/2.0">J. Aitchison, A. Gilchrist, D. Bawden. "Thesaurus construction: a practical manual", 3rd ed., ASLIB, 1997 

G. Booch, L. Jacobson, J. Rumbaugh. "The Unified Modeling Language User Guide", Addison-Wesley, 1998

S. Cranefield. Networked Knowledge Representation and Exchange using UML and RDF
"Journal of Digital Information", 1(8), 2001. http://jodi.ecs.soton.ac.uk/Articles/v01/i08/Cranefield/ 

L.M. Chan, J.P. Comaromi, J.S. Mitchell, M.P. Satija. "Dewey Decimal Classification: a practical guide. 2nd ed., revised for DDC 21", OCLC Online Computer Library Center, 1996 

D. Calvanese, G. De Giacomo, M. Lenzerini, D. Nardi, R. Rosati. Description logic framework for information integration. "Proceedings of the 6th International Conference on the Principles of knowledge Representation and Reasoning (KR'98)", Morgan Kaufman, 1998. p. 2-13 

T. Coquand, G. Sambin, J. Smith, S. Valentini. Inductively generated formal topologies to appear

M. Doerr. Semantic Problems of Thesaurus Mapping. "Journal of Digital Information", 1(8), 2001 http://jodi.ecs.soton.ac.uk/Articles/v01/i08/Doerr/ 

A.C. Foskett. "The Subject Approach to Information", 5th ed., Library Association Publishing, 1996 FOIS98 "Formal Ontology in Information Systems: proceedings of FOIS'98", N. Guarino (ed.), IOS Press, 1998

N. Guarino. Some Ontological Principles for Designing Upper Level Lexical Resources
"Proceedings of the First International Conference on Lexical Resources and Evaluation, Granada, Spain, 28-30 May 1998" http://www.ladseb.pd.cnr.it/infor/Ontology/Papers/LREC98.pdf 

N. Guarino. The role of Identity Conditions in Ontology Design. "Proceedings of the IJCAI-99 Workshop on Ontology and Problem Solving Methods (KRRS), Stockholm, Sweden, August 2, 1999". Republished in "Spatial Information Theory: Cognitive and Computational Foundations of Geographic Information Science", C. Freksa and D. M. Frank (eds.), Springer Verlag, 1999. http://www.ladseb.pd.cnr.it/infor/Ontology/Papers/IJCAI99.pdf 

N. Guarino, C. Masolo, G. Vetere. Ontoseek: Content-based Access to the Web. "IEEE Intelligent Systems", 14(3), 1999. p. 70-80. http://www.ladseb.pd.cnr.it/infor/Ontology/Papers/OntoSeek.pdf 

N. Guarino, C. Welty. Ontological Analysis of Taxonomic Relationships. "Proceedings of ER-2000: The 19th International Conference on Conceptual Modeling", A. Laender, V. Storey (eds.), Springer Lecture Notes in Computer Science, 2000. http://www.ladseb.pd.cnr.it/infor/Ontology/Papers/LADSEB05-2000.pdf 

N. Guarino, C. Welty. Identity and Subsumptio. Ladseb Internal Report 01/2001. http://www.ladseb.pd.cnr.it/infor/Ontology/Papers/Identity&amp;Subsumption.pdf 

J. Hunter. MetaNet - A Metadata Term Thesaurus to Enable Semantic Interoperability Between Metadata Domains. "Journal of Digital Information", 1(8), 2001. http://jodi.ecs.soton.ac.uk/Articles/v01/i08/Hunter/ 

"Journal of Digital Information" - Vol. 1, Issue 4: "Hypermedia Systems" http://jodi.ecs.soton.ac.uk/?vol=1&amp;iss=4 

"Journal of Digital Information" - Vol. 1, Issue 8: "Networked Knowledge Organization Systems"
http://jodi.ecs.soton.ac.uk/?vol=1&amp;iss=8 

"Journal of Logic and Computation" - Vol. 9, No. 3: "Special Issue on Description Logics" 

T. Krichel, S. Warner. Vocabulary for the Academic Metadata Format, draft. http://openlib.org/amf/doc/ebisu.html 

G. Rossi, D. Schwabe, A. Garrido. Designing Computational Hypermedia Applications
"Journal of Digital Information", 1(4), 1999. http://jodi.ecs.soton.ac.uk/Articles/v01/i04/Rossi/ 

J. Sowa. "Conceptual Structures: Information Processing in Minds and Machines", Addison-Wesley, 1984 S00 E. Svenonius. "The Intellectual Foundations of Information Organization", MIT Press, 2000 

G. Sambin, S. Gebellato. A preview of the basic picture: a new perspective on formal topology
Proceedings of "Types '98", T. Altenkirch, W. Naraschewski and B. Reus (eds.), Springer Lecture Notes in Computer Science, 1999. http://www.math.unipd.it/~logic/ftp/BPP.ps 

D. Tudhope, H. Alani, C. Jones. Augmenting Thesaurus Relationships: Possibilities for Retrieval
"Journal of Digital Information", 1(8), 2001. http://jodi.ecs.soton.ac.uk/Articles/v01/i08/Tudhope/ 

S. Valentini. Formal Topology and Search Engine

C. Welty, J. Jenkins. Formal Ontology for Subjec. "Data and Knowledge Engineering", 31(2), 1999. p. 155-182 http://www.cs.vassar.edu/faculty/welty/papers/subjects/subject.html http://www.cs.vassar.edu/faculty/welty/papers/subjects/subject.pdf</referencetext>
