1. Baker N. C. and Fenves S. J. (1987). “A knowledge acquisition study of structural engineers performing preliminary design.” EDRC Technical Report EDRC‐12‐19‐87 Engrg. Design Res. Center Carnegie Mellon Univ. Pittsburgh Penn. Oct.
2. Baker N. C. and Fenves S. J. (1989). “Towards a spatial and functional building design system.” EDRC Technical Report EDRC‐02‐08‐89 Engrg. Design Res. Center (EDRC) Carnegie Mellon Univ. Pittsburgh Penn. Jan.
3. Three models for the description of language
4. Cleaveland J. C. and Uzgalis R. C. (1977). Grammars for programming languages Elsevier North Holland Inc. Amsterdam.
5. Fenves S. J. and Baker N. C. (1988). “Grammars for functional and spatial reasoning in design.” Proc. of the Fifth Conference of Computing in Civil Engineering ASCE 819–828.