Penyidikan tindak pidana cyber pada Ditreskrimsus Polda Metro Jaya (studi hambatan penyidikan cyber crime di Polda Metro Jaya) = The investigation of cyber criminal offense at the directorate of special criminal investigation of the Jakarta metropolitan regional police headquarter Polda Metro Jaya (the study of cyber crime investigation obstacles at the Jakarta Metropolitan Regio) - Dedy Anung Kurniawan, author (2014)