1) Check the ALA Glossary (1983) for an entry.
2) Check the ALA World Encyclopedia (1986) or the Encyclopedia of Library and Information Science (full access available via CDL).
3) Check the index to Knowledge-based Systems for General Reference Work (1995).
4) Check the appendix D of Understanding Reference Transactions (2002).
5) Using your concept, search LLIS and LISA.
Content Suggestions:
1) Use a table of contents, if appropriate
2) Define the concept by citing a source
3) Compare and contrast the different meanings
John V. Richardson Jr.