Appreciation to 2011 Referees
运筹学编辑部感谢2011年所有审稿人，他们的贡献保障了期刊的高专业水准。
The Editorial Board of Operations Research would like to thank the following individuals who acted as referees for papers considered or published during the 2011 calendar year. Without their assistance, it would be impossible for INFORMS to publish a journal of high professional standards.