Burskii, V. P.; Lesina, E. V. On boundary value problems for an improperly elliptic equation in a circle. (English. Russian original) Zbl 07264209 Comput. Math. Math. Phys. 60, No. 8, 1306-1321 (2020); translation from Zh. Vychisl. Mat. Mat. Fiz. 60, No. 8, 1351-1366 (2020). MSC: 35J25 PDF BibTeX XML Cite \textit{V. P. Burskii} and \textit{E. V. Lesina}, Comput. Math. Math. Phys. 60, No. 8, 1306--1321 (2020; Zbl 07264209); translation from Zh. Vychisl. Mat. Mat. Fiz. 60, No. 8, 1351--1366 (2020) Full Text: DOI
Burskii, V. P.; Lesina, E. V. On the third boundary-value problem for an improperly elliptic equation in a disk. (English. Ukrainian original) Zbl 1311.35089 Ukr. Math. J. 66, No. 2, 311-316 (2014); translation from Ukr. Mat. Zh. 66, No. 2, 279-283 (2014). MSC: 35J25 PDF BibTeX XML Cite \textit{V. P. Burskii} and \textit{E. V. Lesina}, Ukr. Math. J. 66, No. 2, 311--316 (2014; Zbl 1311.35089); translation from Ukr. Mat. Zh. 66, No. 2, 279--283 (2014) Full Text: DOI
Burskii, V. P.; Lesina, E. V. Neumann problem and one oblique-derivative problem for an improperly elliptic equation. (English. Russian original) Zbl 1275.35089 Ukr. Math. J. 64, No. 4, 511-524 (2012); translation from Ukr. Mat. Zh. 64, No. 4, 451-462 (2012). Reviewer: Pierpaolo Omari (Trieste) MSC: 35J25 35J40 35B30 PDF BibTeX XML Cite \textit{V. P. Burskii} and \textit{E. V. Lesina}, Ukr. Math. J. 64, No. 4, 511--524 (2012; Zbl 1275.35089); translation from Ukr. Mat. Zh. 64, No. 4, 451--462 (2012) Full Text: DOI