D. G. Aronson: Regularity properties of flows through porous media: The interface
. Arch. Rational Mech. Anal. 37 (1970), 1–10. MR 0255996
| Zbl 0202.37901
 L. A. Caffarelli, A. Friedman: Regularity of the free boundary for the one-dimensional flow of gas in a porous medium
. Amer. J. Math. 101 (1979), 1193–1218. MR 0548877
 J. Chen, J. W. Hopmans, M. E. Grisnier: Parameter estimation of two-fluid capillary pressure-saturation and permeability functions. Advances in Water Resources 22 (1999), 479–493.
 D. Constales: Automatic differentiation in LSODA. In preparation.
 D. Constales, J. Kačur: Inverse problems in porous media flow. Submitted to Computational Geosciences.
 S. O. Eching, J. W. Hopmans: Optimization of hydraulic functions from transient outflow and soil water data. Soil Sci. Soc. Am. J. 57 (1993), 1167–1175.
 S. O. Eching, J. W. Hopmans, O. Wendroth: Unsaturated hydraulic conductivity from transient multistep outflow and soil water pressure. Soil Sci. Soc. Am. J. 58 (1994), 687–695.
 B. H. Gilding: Flow and Transport in Porous Media. World Scientific, Singapore, 1992.
 A. S. Kalašnikov: Formation of singularities in solutions of the equation of nonstationary filtration
. Ž. Vyčisl. Mat. i Mat. Fiz. 7 (1967), 440–444. MR 0211058
 O. A. Olejnik, A. S. Kalašnikov, Chzhou Jui-Lin: Cauchy problems and boundary-value problems for equations of type of infiltration. Izv. AN SSSR Ser. Mat. 5 (1958), 667–704. (Russian)
 L. R. Petzold: Automatic selection of methods for solving stiff and nonstiff systems of ordinary differential equations
. SIAM J. Sci. Stat. Comput. 4 (1983), 136–148. MR 0689694
| Zbl 0518.65051
 D. Russo, E. Bresler, U. Shani, J. C. Parker: Analysis of infiltration events in relation to determining soil hydraulic properties by inverse problem methodology. Water Resources Research 27 (1991), 1361–1373.
 C. J. van Duijn, L. A. Peletier: Nonstationary filtration in partially saturated porous media
. Arch. Rational Mech. Anal. 78 (1982), 173–198. MR 0648943
 M. Th. van Genuchten: A closed-form equation for predicting the hydraulic conductivity of unsaturated soils. Soil Sci. Soc. Am. J. 44 (1980), 892–898.