1. Bratko, I. (1986). Prolog programming for artificial intelligence. Reading, MA: Addison-Wesley.
2. Brayshaw, M. and Eisenstadt, M. (1988). Adding data and procedure abstraction to the transparent Prolog Machine. In R. A. Kowalski and K. A. Bowen (Eds.), Logic programming, Volume 1, Cambridge, MA: MIT Press, 532?547.
3. Brayshaw, M. and Eisenstadt, M. (in press). A practical graphical Prolog tracer. International Journal of Man-Machine Studies.
4. Brown, M. H. and Sedgewick, R. (1984). Progress report: Brown University Instructional Computing Laboratory, ACM SIGCSE Bulletin 16(1), February.
5. Bundy, A., Pain, H., Bma, P. and Lynch, L. (1986). A proposed Prolog story. DAI Research Paper 283, Department of Artificial Intelligence, University of Edinburgh.