Gagen, Justin. 2019. Hybrids and Fragments: Music, Genre, Culture and Technology. Doctoral thesis, Goldsmiths, University of London [Thesis]

Gagen, Justin and Cook, Nicholas. 2016. Performing Live in Second Life. In: Shara Rambarran and Sheila Whiteley, eds. The Oxford Handbook of Music and Virtuality. New York: OUP, pp. 191-209. ISBN 9780199321285 [Book Section]

Cook, Nicholas and Gagen, Justin. 2014. 'Second Liveness'. In: Creativity, Circulation and Copyright: Sonic and Visual Media in the Digital Age. CRASSH, University of Cambridge, United Kingdom. [Conference or Workshop Item]