@article{596940,
	title = {Tractable Competence},
	address = {Hingham, MA, USA},
	author = {Marcello Frixione},
	journal = {Minds Mach.},
	number = {3},
	pages = {379--397},
	publisher = {Kluwer Academic Publishers},
	url = {http://portal.acm.org/citation.cfm?id=596940&coll=Portal&dl=GUIDE&CFID=646452&CFTOKEN=79862955#},
	volume = {11},
	year = {2001},
	biburl = {http://www.bibsonomy.org/bibtex/2b1a53928ce1fc3de8cc48860ab8b682a/fatimabrazao},
	issn = {0924-6495}, doi = {http://dx.doi.org/10.1023/A:1017503201702},
	keywords = {theory }
}