RT Article T1 Offender and offense characteristics of a nonrandom sample of mass murderers A1 Hempel, A. G. A1 Meloy, J. R. A1 Richards, T. C. A2 Meloy, J. R. A2 Richards, T. C. LA English YR 1999 UL https://krimdok.uni-tuebingen.de/Record/1639531378 K1 Massenmord K1 Typologie K1 Massenmörder K1 Serienmörder