The impacts of research and development expenditures: The relationship between total factor productivity and U.S. gross domestic product performance (Innovation, Technology, and Knowledge Management)

Wetter, John J (2011). The impacts of research and development expenditures: The relationship between total factor productivity and U.S. gross domestic product performance (Innovation, Technology, and Knowledge Management). Springer Science+Business Media, LLC.

Wetter, John J. The impacts of research and development expenditures: The relationship between total factor productivity and U.S. gross domestic product performance (Innovation, Technology, and Knowledge Management). Springer Science+Business Media, LLC, 2011.