Automatic Extraction of Analytical Chemical Information. System Description, Inventory of Tasks and Problems, and Preliminary Results. - Geert J. Postma; Bas van Bakel; Gerrit Kateman (J. Chem. Inf. Comput. Sci., 1996)

Modern Classical Document Indexing: A Linguistic Contribution to Knowledge-Based IR. - Bas van Bakel (SIGIR, 1998)