Chepurukhina, I.S. and Murach, A.A. (2015) “Elliptic problems in the sense of B. Lawruk on two-sided refined scales of spaces”, Methods of Functional Analysis and Topology, 21(1), pp. 6–21. Available at: https://zen.imath.kiev.ua/index.php/mfat/article/view/597 (Accessed: 18 December 2025).