Gutlyanskiĭ V, Nesmelova O, Ryazanov V, Yefimushkin A. Poincaré problem with measurable data for semilinear Poisson equation in the plane. Dopov. Nac. akad. nauk Ukr. [Internet]. 2022 Aug. 27 [cited 2024 Nov. 2];(4):10-8. Available from: https://nasu-periodicals.org.ua/index.php/dp/article/view/2022-4-2