In our recent paper, “People, Problems and Planning: A Systems Approach to Problem Identification,” Interfaces, Vol. 8, No. 1, Part 1, November 1977, a few notational and computational errors have been found.
Robert J. Graham, Mohammed Jahani, (1979) Erratum—People, Problems and Planning: A Systems Approach to Problem Identification. Interfaces 9(3):123-123.
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