TY - BOOK AU - Qian,Ying AU - Duncan,Ronald TI - Optimal hedging strategy re-visited : : acknowledging the existence of non-stationary economic time series / T2 - Policy research working paper ; U1 - MISR 332.645 QIA PY - 1994///] CY - [Washington, DC] : PB - World Bank, International Economics Dept., Int ernational Trade Division, KW - Hedging (Finance) KW - Time-series analysis N1 - "March 1994"--Cover; Includes bibliographical references (p. 27-28) ER -