Vogel, Alexander; Wagner, Joachim - 2012 - Version: August 23, 2012
firms with exports and R&D dominates that of exporters without R&D, which in turn dominates that of firms that neither …, therefore, seems to be useful to guide empirical work on the relation between exports, R&D and productivity for services firms …, too. -- Exports ; R&D ; productivity ; business services firms ; Germany …