@book{Lenat.1990, title = {Building Large Knowledge-Based Systems: Representation and Inference in the Cyc Project}, address = {Reading}, author = {Douglas B. Lenat and R. V. Guha}, publisher = {Addison-Wesley}, year = {1990}, biburl = {http://www.bibsonomy.org/bibtex/2284ffb03830424e4f70a195d9dbaaa56/callagialla}, isbn = {0201517523}, keywords = {(Computer (Information Artificial designKnowledge intelligenceExpert representation science)System systems theory) } }