RT Article T1 Collaborative testimony by police officers: a psycho-legal issue JF Criminal behavior and the justice system SP 254 OP 270 A2 Stephenson, Geoffrey M. LA English YR 1989 UL https://krimdok.uni-tuebingen.de/Record/1469935465 SN 354018872X K1 Zeugenaussage K1 Gemeinschaft K1 Polizei