2 citations to https://www.mathnet.ru/rus/vtgu800

1. S. K. Zarifzoda, T. K. Yuldashev, “Some Classes of First-Order Integro-Differential Equations and Their Conjugate Equations”, Lobachevskii J Math, 44:7 (2023), 2994  
2. Alexandre Soldatov, Sarvar Zaripov, “The Volterra Theory of Integro-Differential Equations”, J Math Sci, 277:3 (2023), 467