O'Mahony, Mary (contributor); Vecchi, Michela (contributor) - 2002 - [Elektronische Ressource]
refer to the 1970s. A more recent study by Mairesse and
Hall (1996), based on a panel of US and French firms, reveals that … (1992) for an international investigation of
R&D investments and productivity.
4 In fact, the French data allow a …