Mikhailets, V., Murach, A. ., & Chepurukhina, I. (2025). Elliptic operators and boundary-value problems in spaces of generalized smothness . Ukrains’kyi Matematychnyi Zhurnal, 76(9), 1331-1363. https://doi.org/10.3842/umzh.v76i9.8595