RT Article T1 Are U.S. crime rates really unit root processes? JF Journal of quantitative criminology VO 27 IS 3 SP 299 OP 314 A1 Cook, Jemma A2 Cook, Steve LA English YR 2011 UL https://krimdok.uni-tuebingen.de/Record/1912460130 DO 10.1007/s10940-010-9124-4