- R. Oĭnarov, “Boundedness and compactness in weighted Lebesgue spaces of integral operators with variable integration limits”, Sib Math J, 52, № 6, 2011, 1042
- Julio Delgado, Michael Ruzhansky, “Schatten-von Neumann classes of integral operators”, Journal de Mathématiques Pures et Appliquées, 154, 2021, 1
- R. Oinarov, “Boundedness and compactness of Volterra type integral operators”, Sib Math J, 48, № 5, 2007, 884
- R. Oinarov, “Boundedness of integral operators from weighted Sobolev space to weighted Lebesgue space”, Complex Variables and Elliptic Equations, 56, № 10-11, 2011, 1021
- V. D. Stepanov, E. P. Ushakova, “Approximation Numbers of the Two-Dimensional Rectangular Hardy Operator”, Math Notes, 115, № 3-4, 2024, 390