RT Article T1 Problems and prospects for European police cooperation after Maastricht JF Policing & society VO 5 IS 3 SP 249 OP 261 A1 Guyomarch, A. LA English YR 1995 UL https://krimdok.uni-tuebingen.de/Record/1639325476 K1 Polizei K1 Zusammenarbeit K1 Europäische Union