Russian 'Hybrid Warfare' and the Annexation of Crimea: The Modern Application of Soviet Political Warfare: DeBenedictis, Kent: 9780755639991: Amazon.com: Books
How Russian hybrid warfare changed the Pentagon's perspective
Hybrid Warfare Helps Russia Level the Playing Field | Proceedings - August 2018 Vol. 144/8/1,386
Ukraine's Lessons for the Future of Hybrid Warfare | RAND
Today's Russia's “Hybrid Policy” as a Strategy for the Implementation of Its National Geopolitics - Borysfen Intel