1. V. G. Maz’ya and B. A. Plamenevsky, “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” [in Russian], Math. Nachr. 81, 25–82 (1978);
2. English transl.: Am. Math. Soc. Transl. 123, 1–56 (1984).
3. V. A. Kozlov, V. G. Maz’ya, and J. Rossmann, Elliptic Boundary Value Problems in Domains with Point Singularities, Am. Math. Soc., Providence, RI (1997).
4. G. M. Verzhbinskii and V. G. Maz’ya, “Asymptotic behavior of solutions of the Dirichlet problem near a nonregular boundary,” [in Russian], Dokl. Akad. Nauk SSSR 176, 498–501 (1967);
5. English transl.: Sov. Math., Dokl. 8, 1110–1113 (1967).