@inbook {coelho96describing,
	title = {Describing Reusable Problem-Solving Methods with an Ontology of Roles},
	booktitle = {Knowledge Acquisition Workshop 96},
	year = {1996},
	month = {jan},
	pages = {20 pages},
	publisher = {SRDG Publications},
	organization = {SRDG Publications},
	address = {Banff},
	author = {E. Coelho and Guy Lapalme}
}
