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Estimates in \(L_ p\) and in Hölder classes and the Miranda-Agmon maximum principle for solutions of elliptic boundary value problems in domains with singular points on the boundary. (English) Zbl 0554.35035
Translation from Math. Nachr. 81, 25-82 (1978; Zbl 0371.35018).

35J40 Boundary value problems for higher-order elliptic equations
35B50 Maximum principles in context of PDEs
35B65 Smoothness and regularity of solutions to PDEs
35J67 Boundary values of solutions to elliptic equations and elliptic systems
35B05 Oscillation, zeros of solutions, mean value theorems, etc. in context of PDEs
35B45 A priori estimates in context of PDEs
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