Beach, J. H., S. Pramanik & J. H. Beaman (1993): Hierarchic taxonomic databases, in Fortuner, R. (ed.), Advances in computer methods for systematic biology: Artificial intelligence, databases, computer vision, 241-256. Baltimore.
Berendsohn, W. G. (1994): IOPI World Vascular Plant Checklist. A CASE Model of Checklist System Data, in Wilson, K. (ed.), International Organisation for Plant Information (IOPI), Global Plant Checklist project plan, version 1.2., Sidney. (An updated draft version is available on the World Wide Web under http://userpage.fu-berlin.de/~wgb/7301root.htm.)
Berendsohn, W. G. (1995): The concept of "potential taxa" in databases. Taxon 44: 207-212.
Berendsohn, W. G., Greilhuber, J., Anagnostopoulos, A., Bedini, G., Jakupovic, J., Nimis, P.L. & Valdés, B. (1996a): A comprehensive datamodel for karyological databases. Plant Syst. Evol. in print.
Berendsohn, W. G., A. Anagnostopoulos, G. Hagedorn, J. Jakupovic, P. L. Nimis & B. Valdés (1996b): The CDEFD information model for biological collections, in Proceedings of the European Science Foundation workshop "Disseminating Biodiversity Information", Amsterdam, 25. - 27. 3. 1996. (Pre-print available on the WWW under http://userpage.fu-berlin.de/~wgb/CDEFD/cdefd.html.)
Bisby, F.A. (1994): Plant Names in botanical databases. International Working Group on Taxonomic Databases for Plant Sciences (TDWG) Plant Taxononomic Databases Standards No. 3. Pittsburgh.