Klette, Tor Jakob; Johansen, Frode - Statistisk Sentralbyrå, Government of Norway - 1996
already acquired knowledge to the productiveness of current research, fits the empirical evidence better than the standard … model that treats knowledge accumulation symmetrically to the accumulation of physical capital. We present an econometric … performance and a positive feedback effect from the stock of knowledge capital. We calculate the depreciation rate and the rate of …