1.
Karatopraklieva M. A nonlocal boundary value problem for a class of nonlinear equations of mixed type. Ann. Sofia Univ. Fac. Math. and Inf. [Internet]. 2008 Dec. 12 [cited 2024 Nov. 28];98:143-55. Available from: https://ftl5.uni-sofia.bg./index.php/fmi/article/view/134