Joseph A. Swanson

Economic Performance in Regulated and Unregulated Environments: A Comparison of U. S. and Canadian Railroads

Douglas W. Caves, Laurits R. Christensen, L. R. Christensen, 1981 .

Productivity Growth, Scale Economies, and Capacity Utilization in U.S. Railroads, 1955-74

Douglas W. Caves, Laurits R. Christensen, L. R. Christensen, 1981 .

Productivity in U.S. Railroads, 1951-1974

Douglas W. Caves, Laurits R. Christensen, L. R. Christensen, 1980 .