Crepon, Bruno; Duguet, Emmanuel; Mairesse, Jacques - In: Economics of Innovation and New Technology 7 (1998) 2, pp. 115-158
of firms engage in research activities and/or apply for patents; productivity, innovation and research are endogenously … being strictly proportional to size). The firm innovation output, as measured by patent numbers or innovative sales, rises …This paper studies the links between productivity, innovation and research at the firm level. We introduce three new …