N. F. Abuzyarova, Z. Yu. Fazullin, “Invariant subspaces in non-quasianalytic spaces of $\Omega$-ultradifferentiable functions on an interval”, Eurasian Math. J., 15:3 (2024), 9–24
B. E. Kanguzhin, “Propagation of nonsmooth waves under singular perturbations of the wave equation”, Eurasian Math. J., 13:3 (2022), 41–50