Khromov Alexander Avgustovich RussiaSaratov Saratov State University, Russia, Saratov, Astrakhanskaya 83 доцент кафедры дифференциальных уравнений и прикладной математикиКандидат физико-математических наукKhromovAP@info.sgu.ru Author's articles Approximation of Function and Its Derivative by the Modificated Steklov Operator The Solution of the Problem of Determining the Density of Heat Sources in a Rod The Solution of a Certain Inverse Problem Solution of Integral Equations via Resolvents of Simplest Differential Operators Approximating Properties of the Powers of the Differentiation Operator Resolvent Approximating Properties of Solutions of the Differential Equation with Integral Boundary Condition