Describes the components and capabilities of expert systems, discusses the use of such systems in library information applications, and outlines research being done in this area. A project aimed at the development of an expert system for referral services is described in detail, and implications for future research are discussed. (CLB)

Describes a prototype expert system that can be used in consultation mode to assist users in their searches, or in simulation coach or Socratic tutor modes to instruct professionals in the reference process. Examples of transactions in each mode are given, and a glossary is provided. (19 notes with references) (CLB)