Bates, Marcia J. 1998. Indexing and access for digital libraries and the Internet: Human, database and domain factors. Journal of the American Society for Information Science 49, no. 13. Hamilton, Feona J. 1998. Multi-level linking technology by Swets. Information World Review, no. 142 (December). Van de Sompel, Herbert. 1991. Heading towards an electronic library: location independent integration of electronic reference sources in library workstations. 10th Annual meeting of the Dobis/Libis User Group. Leuven: Dobis/Libis User Group Secretary. Van de Sompel, Herbert. 1993. Optimalisatie van de konsultatieketen aan de Universiteit Gent. Bibliotheekkunde 51. Kris Clara and Julien Van Borm. Antwerpen: VVBAD. Van de Sompel, Herbert. 1994. Technology and collaboration: creating an effective information environment in an academic context. Online Information 94. Proceedings of the 18th International Online Information Meeting. Oxford and New Jersey: Learned Information (Europe) Ltd.