• Civil defence and cyber security: A contemporary European perspectiveTikk, EnekenNational cyber emergencies: the return to civil defence2020 / p. 76-92 https://doi.org/10.4324/9780429343438
• Future normative challengesTikk, EnekenThe Oxford handbook of cyber security2021 / p. 751–768 https://doi.org/10.1093/oxfordhb/9780198800682.013.50
• International information security: Problems and ways of solving themKrutskikh, Andrei V.; Streltsov, Anatoli A.; Tikk, EnekenRoutledge handbook of international cybersecurity2020 / p. 260-268 https://doi.org/10.4324/9781351038904-26 https://www.ester.ee/record=b5308475*est
• IntroductionKerttunen, Mika; Tikk, EnekenRoutledge handbook of international cybersecurity2020 / p. 1-8 https://doi.org/10.4324/9781351038904-1 https://www.ester.ee/record=b5308475*est
• National cybersecurity legislation : is there a magic formula?Tikk, EnekenCybersecurity Best Practices : Lösungen zur Erhöhung der Cyberresilienz für Unternehmen und Behörden2018 / p. 615-633 https://doi.org/10.1007/978-3-658-21655-9_42
• Navigating a Finnish take on international law : interview with Ambassador Marja Lehto, Senior Expert on Public International Law at the Ministry of Foreign Affairs, FinlandDirections : Cyber Digital Europe2020 https://directionsblog.eu/navigating-a-finnish-take-on-international-law/
• Parabasis : Cyber-diplomacy in StalemateTikk, Eneken; Kerttunen, Mika2018 https://www.academia.edu/38195740/Tikk_Kerttunen_Parabasis_Cyber-diplomacy_in_stalemate.pdf
• Routledge handbook of international cybersecurity2020 https://doi.org/10.4324/9781351038904 https://www.ester.ee/record=b5308475*est
• Strategically normative. Norms and principles in national cybersecurity strategiesKerttunen, Mika; Tikk, Eneken2019 https://eucyberdirect.eu/wp-content/uploads/2019/04/kerttunen_tikk-strategically-normative-april-2019-eucyberdirect_.pdf
• The politics of stability: cement and change in cyber affairsKerttunen, Mika; Tikk, EnekenRoutledge handbook of international cybersecurity2020 / p. 52-64 https://www.ester.ee/record=b5308475*est https://doi.org/10.4324/9781351038904-6
• The role of the UN Security Council in cybersecurity : International peace and security in the digital ageTikk, Eneken; Schia, Niels NagelhusRoutledge handbook of international cybersecurity2020 / p. 354-356 https://doi.org/10.4324/9781351038904-35 https://www.ester.ee/record=b5308475*est
• What do we talk about when we talk about international cybersecurityTikk, EnekenRoutledge handbook of international cybersecurity2020 / p. 389-396 https://doi.org/10.4324/9781351038904-38 https://www.ester.ee/record=b5308475*est
• 5G - ohust on asi kaugelTikk, EnekenPostimees2019 / lk. 16 https://arvamus.postimees.ee/6576219/eneken-tikk-5g-ohust-on-asi-kaugel