MAP20110002763 Keeney, Gregory L. Identifying and structuring the objectives of terrorists / Gregory L. Keeney and Detlof Von Winterfeldt En: Risk analysis : an international journal. - McLean, Virginia : Society for Risk Analysis, 1987-2015 = ISSN 0272-4332. - 01/12/2010 Tomo 30 Número 12 - 2010 I. Winterfeldt, Detlof Von .