P. C. Stubbs

Technological innovation and competitiveness in the tractor industry

M. Gibbons, Pier Paolo Saviotti, R. W. Coombs, 1981 .

Innovation and technical change : A case study of the U.K. tractor industry, 1957 1977

Michael Gibbons, Pier Paolo Saviotti, Rod Coombs, 1982 .

An approach to the construction of indexes of technological change and of technological sophistication: The case of agricultural tractors

Pier Paolo Saviotti, M. Gibbons, P. C. Stubbs, 1982 .