Hagemann, S. Terrestrial Hydrology, The Land in the Earth System, MPI for Meteorology, Max Planck Society;
Maechel, H., Rudolf, B., Maurer, T., Hagemann, S., Hagenbrock, R., Kitaev, L., et al. (2012). Observed hydrological cycle. In P. Lemke (Ed.), Arctic climate change - ACSYS decade and beyond (pp. 199-246). Springer. doi:10.1007/978-94-007-2027-5_5.