43 IZA Discussion Papers
IZA Discussion Paper No. 4564
published in: Journal of Economic Dynamics and Control, 2010, 34 (4), 798-815
IZA Discussion Paper No. 4199
published as 'A sequential Malmquist–Luenberger productivity index: Environmentally sensitive productivity growth considering the progressive nature of technology ' in: Energy Economics, 2011, 32 (6), 1345 - 1355
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