@booklet {lapalme88actorapproach,
	title = {An Actor Approach to the Design of a User-Friendly Interface},
	year = {1988},
	month = {may},
	publisher = {Laboratoire LSI, Universit{\'e} Paul-Sabatier, Toulouse},
	type = {document interne},
	author = {Guy Lapalme and Senteni, A.}
}
