Vir - besedilo: 42000A0922(02) The Schengen acquis - Convention implementing the Schengen Agreement of 14 June 1985 between the Governments of the States of the Benelux Economic Union, the Federal Republic of Germany and the French On the gradual abolition of checks at their common borders
Definicija: Any precautionary action, procedure or installation conceived or undertaken to guard or defend from harm persons, property or the environment.
Vir - besedilo: 42000A0922(02) Konvencija o izvajanju Schengenskega sporazuma z dne 14. junija 1985 med vladami držav Gospodarske unije Beneluks, Zvezne republike Nemčije in Francoske republike o postopni odpravi kontrol na skupnih mejah