1. Environmental and Health-Safety Regulations, Productivity Growth, and Economic Performance: An Assessment;Christainsen,1980
2. Public regulations and the slowdown in productivity growth;Christainsen;Amer. Econ. Rev.,1981
3. Capital formation and the recent productivity slowdown;Clark;J. Finance,1978
4. Pollution controls and productivity growth in basic industries;Crandall,1980
5. Is Environmental Policy Responsible for Declining Productivity Growth?;Crandall,1979