Back-of-book subject indexing with APL: Automated indexing for those without computer background.

John C. Pierce Back-of-book subject indexing with APL: Automated indexing for those without computer background. 85-91 1978 14 Inf. Process. Manage. 2 http://dx.doi.org/10.1016/0306-4573(78)90065-1 db/journals/ipm/ipm14.html#Pierce78