Trail Management in Hypertext: Database Support for Navigation through Textual Complex Objects. - T. J. Sillitoe; B. Nick Rossiter; Michael A. Heather (BNCOD, 1990)

Database Support for Very Large Hypertexts. - B. Nick Rossiter; T. J. Sillitoe; Michael A. Heather (Electron. Publ., 1990)