RT Article T1 Neighborhood variation in gang member concentrations JF Crime & delinquency VO 57 IS 3 SP 377 OP 407 A1 Katz, Charles M. 1969- A2 Schnebly, Stephen M. LA English YR 2011 UL https://krimdok.uni-tuebingen.de/Record/1549563726 K1 Gang member K1 Neighborhood conditions DO 10.1177/0011128708317065