The New York Times:

The Nobel Memorial Prize in Economic Science was awarded on Monday to two Americans for their work in economic governance.
The prize committee cited Elinor Ostrom of Indiana University “for her analysis of economic governance, especially the commons” and Oliver E. Williamson of the University of California, Berkeley “for his analysis of economic governance, especially the boundaries of the firm.”
Ms. Ostrom becomes the first woman to win the prize for economics.