Hahn, Robert W. Choosing Among Fuels and Technologies for Cleaning Up the Air Heinz College paper Public Policy;Information Systems 1994-01-01
    https://kilthub.cmu.edu/articles/journal_contribution/Choosing_Among_Fuels_and_Technologies_for_Cleaning_Up_the_Air/6471101
10.1184/R1/6471101.v1