Kramers , L., J.-D. van Wees, M.P.D. Pluymaekers, A. Kronimus, and T. Boxem. 2014. “Direct Heat Resource Assessment and Subsurface Information Systems for Geothermal Aquifers; The Dutch Perspective”. Netherlands Journal of Geosciences 91 (March):637-49. https://doi.org/10.1017/S0016774600000421.