Border security in the Al-Qaeda era / edited by John A. Winterdyk, Kelly W. Sundberg. - Boca Raton : CRC Press, 2010. - xliv, 375 p. : ill., maps ; 25 cm. Includes bibliographical references and index. ISBN: 9781420085440 (alk. paper) RM257.63 1420085441 (alk. paper) Subjects--Uniform Titles: Schengen Agreement (1985) Subjects--Topical Terms: Freedom of movement (International law)Border security.Boundaries.Admission of nonimmigrants.Aliens.Emigration and immigration law.