@incollection{defevents,
	title = {Defining Events: Problem Definition in the Media Arena },
	author = {Regina G Lawrence},
	chapter = {6},
	editor = {Roderick P. Hart and Bartholomew H. Sparrow},
	pages = {91-111},
	publisher = {Rowman & Littlefield},
	year = {2001},
	biburl = {http://www.bibsonomy.org/bibtex/29dc7c325875a5865515975bf32db4044/mbinotto},
	abstract = {Politics, Discourse, and American Society: New Agendas},
	keywords = {agenda columbine eventi events politica }
}