TY - JOUR A1 - de Rooij, G. H. T1 - Thermodynamics of the hydraulic head, pressure head, and gravitational head in subsurface hydrology, and principles for their spatial averaging JO - Hydrol. Earth Syst. Sci. Discuss. J1 - HESSD VL - 5 IS - 3 SP - 1137 EP - 1157 Y1 - 2008/05/09 PB - Copernicus Publications SN - 1812-2108 UR - http://www.hydrol-earth-syst-sci-discuss.net/5/1137/2008/ L1 - http://www.hydrol-earth-syst-sci-discuss.net/5/1137/2008/hessd-5-1137-2008.pdf ER -