Sidney Graham Winter (born 1935, Iowa City, Iowa) is an American economist and Professor Emeritus of Management at the Wharton School, University of Pennsylvania. He is recognized as a leading figures in the revival of evolutionary economics. In 1982, he co-published with Richard R. Nelson An Evolutionary Theory of Economic Change, a book which has since been cited nearly 25,000 times. Winter was Chief Economist of the US General Accounting Office (1989-1993). He won the Viipuri Prize for Strategic Management in 2008. Winter was the second husband and widower of economist Alice Mitchell Rivlin. Works An Evolutionary Theory of Economic Change, 1982, Patents and Welfare in an Evolutionary Model., 1993 Founding Co-editor of Journal of Economic Behavior and Organization (with R. H. Day) External links Faculty profile at University of Pennsylvania web site Charles Cooper Memorial Lecture at UNU-MERIT web site. Innovation economists American economists Fellows of the Econometric Society 1935 births Living people Writers from Iowa City, Iowa Economists from Iowa Academic journal editors 20th-century American male writers