1. Steven Abney. 1991. Parsing by chunks. In Robert Berwick, Steven Abney, and Carol Tenny, editors, Principle-based parsing. Kluwer Academic Publishers.
2. Bar-Hillel, Y 1960 A demonstration of the nonfeasibility of fully automatic high quality translation. In FL Alt (ed): The present status of automatic translation of languages Academic Press, New York, 158–163
3. Peter Biebricher, Norbert Fuhr, Gerhard Lustig, Michael Schwanter, and Gerhard Knorz 1988 The automatic indexing system AIR/PHYS — from research to application 11th Int Conf on R D in IR 333–342
4. Harold Borko and Myrna Bernick 1963 Automatic document classification. JACM 10 151–161
5. Sonja Brajovic 2002 Personal Communication