Operations Research, Volume 37

Volume 37, Number 1, January / February 1989

Volume 37, Number 2, March / April 1989

Volume 37, Number 3, May / June 1989

Volume 37, Number 4, July / August 1989

Volume 37, Number 5, September / October 1989

Volume 37, Number 6, November / December 1989

maintained by Schloss Dagstuhl LZI at University of Trier