2 citations to https://www.mathnet.ru/eng/ufa128

1. Amosov G.G., Baitenov E.L., “on Perturbations of the Semigroup of Shifts on the Half-Axis Changing the Domain of Its Generator”, Lobachevskii J. Math., 41:12, SI (2020), 2303–2309            
2. Dil'nyi V.M., “on Invariant Subspaces in Weighted Hardy Spaces”, Ukr. Math. J., 66:6 (2014), 955–960