- K. P. Isaev, R. S. Yulmukhametov, “On a Sufficient Condition for the Existence of Unconditional Bases of Reproducing Kernels in Hilbert Spaces of Entire Functions”, Lobachevskii J Math, 42, № 6, 2021, 1154
- K. P. Isaev, K. V. Trunov, R. S. Yulmukhametov, “Equivalent Norms in Hilbert Spaces with Unconditional Bases of Reproducing Kernels”, J Math Sci, 250, № 2, 2020, 310