FORMAL MODELS OF RETRIEVAL PROVIDE THE BASIS FOR RETRIEVING HYPERTEXT NODES IN RESPONSE TO EXPLICIT QUERIES. THIS RETRIEVAL FACILITY CAN BE INTEGRATED WITH THE TYPICAL BROWSING FACILITY FOR EFFECTIVE ACCESS TO LARGE DATABASES. IN THIS PAPER WE DESCRIBE A RETRIEVAL MODEL DEVELOPED FOR BIBLIOGRAPHIC INFORMATION RETRIEVAL AND SHOW HOW HYPERTEXT LINKS CAN BE INCORPORATED. THE MODEL TREATS RETRIEVAL AS A FORM OF INFERENCE IN WHICH MULTIPLE SOURCES OF EVIDENCE, INCLUDING HYPERTEXT LINKS, ARE COMBINED AND USED TO RANK THE RETRIEVED NODES. IMPLEMENTATION ASPECTS OF THE MODEL ARE ALSO DISCUSSED.