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Violent groups and police tactics : should tear gas make crime preventers cry?
Poutvaara, Panu, (2005)
Hooliganism in the shadow of the 9/11 terrorist attack and the Tsunami: do police reduce group violence?
Poutvaara, Panu, (2006)
Unemployment and gang crime: could prosperity backfire?
Poutvaara, Panu, (2007)