| [1] |
Aronson, D. G., Regularity properties of flows through porous media: the interface, Arch. Rational Mech. Anal., 37, 1-10 (1970) · Zbl 0202.37901 |
| [2] |
Aronson, D. G., Regularity properties of flows through porous media: a counter-example, SIAM J. Appl. Math., 19, 299-307 (1970) · Zbl 0255.76099 |
| [3] |
Butzer, P. L.; Köhnen, W., Approximation invariance of semi-group operators under perturbations, J. Approximation Theory, 2, 389-393 (1969) · Zbl 0185.21003 |
| [4] |
Butzer, P. L.; Nessel, R. J.; Trebels, W., Multipliers with respect to spectral measures in Banach spaces and approximation, I. Radial multipliers in connection with Riesz-bounded spectral measures, J. Approximation Theory, 8, 335-356 (1973) · Zbl 0268.41019 |
| [5] |
Forsythe, G. E.; Wasow, W. R., Finite-Difference Methods for Partial Differential Equations (1960), John Wiley and Sons: John Wiley and Sons New York · Zbl 0099.11103 |
| [6] |
Hudjaev, S. I.; Vol’pert, A. I., Cauchy’s problem for degenerate second order parabolic equations, Math. USSR-Sb., 7, 365-387 (1969) · Zbl 0191.11603 |
| [7] |
Johnen, H., Inequalities connected with the moduli of smoothness, Mat. Vesnik, 9, No. 24, 289-303 (1972) · Zbl 0254.26005 |
| [8] |
Köhnen, W., Das Anfangswertverhalten von Evolutionsgleichungen in Banachräumen, Teil II: Anwendungen, Tôhoku Math. J., 23, 621-639 (1971) · Zbl 0238.47009 |
| [9] |
Konishi, Y., A remark on fluid flows through porous media, (Proc. Japan Acad., 49 (1973)), 20-24 · Zbl 0269.35001 |
| [10] |
Kruzhkov, S. N., Generalized solutions of nonlinear equations of first order with several variables, Mat. Sb., 70, 394-415 (1966) · Zbl 0152.09502 |
| [11] |
Oleinik, O. A., On some degenerate quasilinear parabolic equations, (Seminari dell Istituto Nazionale di Alta Math.. Seminari dell Istituto Nazionale di Alta Math., 1962-1963, Oderisi (1964)), 355-371 |
