Baranetskij, Ya.O., I.Ya. Ivasiuk, P.I. Kalenyuk, and A.V. Solomko. “The Nonlocal Boundary Problem With Perturbations of Antiperiodicity Conditions for the Elliptic Equation With Constant Coefficients”. Carpathian Mathematical Publications 10, no. 2 (December 31, 2018): 215–234. Accessed November 21, 2024. https://ktipe.pnu.edu.ua/index.php/cmp/article/view/1484.