The Impact of Technical Copy Protection and Internet Services Usage on Software Piracy - An International Survey on Sequencer Software Piracy -. - Petar Djekic; Claudia Löbbecke (ECIS, 2005)

Software Piracy Prevention through Digital Rights Management Systems. - Petar Djekic; Claudia Löbbecke (CEC, 2005)

Preventing application software piracy: An empirical investigation of technical copy protections. - Petar Djekic; Claudia Loebbecke (J. Strateg. Inf. Syst., 2007)