Wolff, Edward N. - In: International Productivity Monitor 1 (2000) Fall, pp. 17-22
.S. productivity levels during the postwar period and finds strong evidence for this phenomenon up to 1990, with rapid growth in … the 1990s, reflecting slower growth in OECD countries, a diminishing of the forces behind the convergence process given … the narrowing of the productivity gap with the United States, and perhaps most important, the acceleration of productivity …