Schengen agreement

Sherr, J. (2000). The Schengen agreement, EU enlargement and European security. National Security Defence, 9, 38-43. 

Special bilateral agreements for border regions, such as long term multi-entry national visas at low or zero charge, very short-term visas for one or two days to facilitate local family contacts, tourism and small scale commerce, and (outside Schengen jurisdiction) long-term or permanent resident permits ... 

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