O'Callaghan, J. 2011. "Soundscape Elements in the Music of Denis Smalley: Negotiating the Abstract and the Mimetic" Organised
      Sound. 16(1). (Forthcoming. Publication date: April 2011.)
O'Callaghan, J. and Eigenfeldt, A. 2010. "Gesture transformation through electronics in the music of Kaija Saariaho" Electroacoustic
      Music Studies Network Conference 2010, Shanghai. http://www.ems-network.org/IMG/pdf_EMS10_OCallaghan_Eigenfeldt.pdf
      Accessed 25 October 2010.

unpublished essays:

O'Callaghan, J. 2009. Dialectic Form in Frederic Rzewski's The People United Will Never Be Defeated! (2009)