Citation: Rd. Keppel, Investigation of the serial offender: Linking cases through modus operandiand signature, SERIAL OFFENDERS : CURRENT THOUGHT, RECENT FINDINGS, 2000, pp. 121-133
Citation: Rd. Keppel et R. Walter, Profiling killers: A revised classification model for understanding sexualmurder, INT J OFFEN, 43(4), 1999, pp. 417-437