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2. Bengt, Stymme, Values and Processes: A Systems Study of Effectiveness in Three Organizations, Studentlitteratur Lund, Sweden, 1970.
3. Conflict and Social Change, Augsburg Publishing House, Minneapolis, 1975.
4. Social Conflict, D. C. Heath and Co., Lexington, Mass., 1974.
5. Conflict and Communication, Free Press, New York, 1969.