@inbook {Boughanem_04:Mod_les,
	title = {Mod{\`e}les de langue pour la recherche d{\textquoteright}informations, dans Les syst{\`e}mes de recherche d{\textquoteright}informations},
	year = {2004},
	pages = {163-184},
	publisher = {ed. M. Ihadjadene, Hermes},
	organization = {ed. M. Ihadjadene, Hermes},
	chapter = {Mod{\`e}les conceptuels},
	author = {M. Boughanem and W. Kraaij and Jian-Yun Nie}
}
