Savchenko, Yu. On the existence of the solution of a degenerate, higher order, elliptic equation in the space \(L_ p\). (Russian) Zbl 0511.35037 Differ. Uravn. Primen. 30, 105-115 (1981). MSC: 35J70 35D05 35J30 PDFBibTeX XMLCite \textit{Yu. Savchenko}, Differ. Uravn. Primen. 30, 105--115 (1981; Zbl 0511.35037)
Savchenko, Yuliya The solvability of the Dirichlet problem for a quasilinear elliptic equation. (Russian) Zbl 0463.35037 Differ. Uravn. Primen. 27, 83-98 (1980). MSC: 35J65 35J70 35A05 PDFBibTeX XMLCite \textit{Y. Savchenko}, Differ. Uravn. Primen. 27, 83--98 (1980; Zbl 0463.35037)