For recent publications by Johan Galtung, take a look at Transcend Media Service (articles) or click here (book list, pdf).

A structural theory of aggression. Journal of Peace Research, 1964.
 
Theory and methods of social research. Oslo: Universitetsforlaget, 1967.

On the effects of international economic sanctions: with examples from the case of Rhodesia. World Politics, 1967.

Violence, peace and peace research. Journal of Peace Research, 1969.

A structural theory of imperialism. Journal of Peace Research, 1971.

The basic needs approach. Human needs, 1980.

Cultural violence. Journal of Peace Research, 1990.

Human rights in another key. Cambridge, MA: Polity, 1994.

Menschenrechte: anders gesehen. Frankfurt a.M.: Suhrkamp, 1994.

High road, low road: charting the course for peace journalism. Track Two, 1998.

50 years: 100 Peace & Conflict Perspectives. Transcend University Press, 2008.