A Framework for a Forensically Sound Harvesting the Dark Web. - Oliver Popov; Jesper Bergman; Christian Valassi (CECC, 2018)

Exploring Dark Web Crawlers: A Systematic Literature Review of Dark Web Crawlers and Their Implementation. - Jesper Bergman; Oliver Popov (IEEE Access, 2023)

Recognition of tor malware and onion services. - Jesper Bergman; Oliver Popov (J. Comput. Virol. Hacking Tech., 2024)