"International Law Applicable to Cyber Operations." Tallinn Manual  2 (2017).

"The Nature of International Law Cyber Norms." Tallinn Paper  5 (2014).

Tikk, Eneken, Kadri Kaska, and Liis Vihul. International Cyber Incidents: Legal Considerations. Tallinn, Estonia: Cooperative Cyber Defence Center of Excellence, 2010.