RT Article T1 The role of drug markets and gangs in local homicide rates JF Homicide studies VO 2 IS 3 SP 241 OP 262 A1 Cohen, Jacqueline A2 Tita, George E. A2 Engberg, John Barker 1957- A2 Cork, Daniel LA English YR 1998 UL https://krimdok.uni-tuebingen.de/Record/1912692422 DO 10.1177/1088767998002003007