1. Alcamo, J., Döll, P., Henrichs, T., Kaspar, F., Lehner, B., Rösch, T., and Siebert, S.: 2003a, ‘Development and testing of the WaterGAP 2 global model of water use and availability’, Hydrol. Sci. J. 48(3), 317–337.
2. Alcamo, J., Döll, P., Henrichs, T., Kaspar, F., Lehner, B., Rösch, T., and Siebert, S.: 2003b, ‘Global estimates of water withdrawals and availability under current and future “business-as-usual” conditions’, Hydrol. Sci. J. 48(3), 339–349.
3. Alcamo, J., Leemans, R., and Kreileman, E.: 1998, Global Change Scenarios of the 21st Century – Results from the IMAGE 2.1 Model, Elsevier, Oxford, UK.
4. Arnell, N. W.: 1994, ‘Variations over time in European hydrological behaviour: A spatial perspective’, in FRIEND, Flow Regimes from International Experimental and Network Data, IAHS Publication 221, pp. 179–184.
5. Arnell, N. W.: 1999, ‘The effect of climate change on hydrological regimes, in Europe: A continental perspective’, Global Environ. Change 9, 5–23.