Tolong jelaskan mengenai Ditulis bersama penulis lain dari Sjahrir (ekonom)

Indonesian Financial and Trade Policy Deregulation: Reform and Response, bersama Colin Brown, dalam buku The Dynamics of Economic Policy Reform in South East Asia and the South-West Pacific, Andrew J. MacIntyre and Kanishka Jayasuriya (Eds.), Oxford University Press, 1992.

Indonesian Palm Oil Trade and Development: A Case of Policy Induced Distortion, bersama Erna Zetha Rusman, dalam buku Trade, Protectionism, and Industrial Adjustment in Vegetable Oils. Asian Responses to North America, J. Tan Loong Hoe & S. Sharma (Eds.), ISEAS, 1989.

The Role of the Budget in Indonesias Economic Restructuring, bersama Widjanarko, dalam buku The Politics of Economic Reform in Southeast Asia: The Experience of Thailand, Indonesia and the Philippines, David G. Timberman (Ed.), Asian Institute of Management, Philippines, 1992.