1.
Il'kiv V, Savka I, Symotyuk M. Sobolev periodic solutions of a partial differential equation with coefficients which depend on a parameter. Carpathian Math. Publ. [Internet]. 2013 Dec. 30 [cited 2024 Nov. 21];5(2):249-55. Available from: https://vps.pnu.edu.ua/index.php/cmp/article/view/1316