Wang, Zhi. A flexible modeling framework to estimate inter regional trade patterns and input-output accounts / Zhi Wang and Patrick Canning. - Washington, D. C : World Bank, 2004. - 35p ; 27 cm. - Policy research working papers ; no. 3359 . Also available online. Includes bibliographical references. Open access. Subjects--Topical Terms: Regional economic disparities--Mathematical models.Input-output tables.