@booklet {stavins_project_1991, title = {Project 88 {\textendash} Round II, Incentives for Action: Designing Market-Based Environmental Strategies. A Public Policy Study sponsored by Senator Timothy E. Wirth, Colorado, and Senator John Heinz, Pennsylvania.}, year = {1991}, note = {F-5}, month = {may}, address = {Washington, D.C.}, author = {Robert N. Stavins} }