1. Khromov, A.P., On the convergence of the formal Fourier solution of the wave equation with a summable potential, Comput. Math. Math. Phys., 2016, vol. 56, @@no. 10, pp. 1778–1792.
2. Kornev, V.V. and Khromov, A.P., On a generalized formal Fourier solution of the mixed problem for an inhomogeneous wave equation, in Mater. 19-i mezhdunar. Saratovskoi zimnei shkoly “Sovremennye problemy teorii funktsii i ikh priblizhenii,” posvyashch. 90-letiyu akad. P.L. Ul’yanova (Proc. 19th Int. Saratov Winter Sch. “Modern Problems of the Theory of Functions and Their Approximations,” Dedicated 90th Anniv. Acad. P.L. Ul’yanov), January 29–February 2, Saratov, 2018, pp. 156–159.
3. Kornev, V.V. and Khromov, A.P., On solving an inhomogeneous wave equation with fixed end points and zero initial conditions, in Mater. 19-i mezhdunar. Saratovskoi zimnei shkoly “Sovremennye problemy teorii funktsii i ikh priblizhenii,” posvyashch. 90-letiyu akad. P.L. Ul’yanova (Proc. 19th Int. Saratov Winter Sch. “Modern Problems of the Theory of Functions and Their Approximations,” Dedicated 90th Anniv. Acad. P.L. Ul’yanov), January 29–February 2, Saratov, 2018, pp. 159–160.
4. Kornev, V.V. and Khromov, A.P., On the classical and generalized solution of the mixed problem for the wave equation, in Mater. mezhdunar. konf. “Sovremennye metody teorii krayevykh zadach. Pontryaginskie chteniya—XXIX,” posvyashch. 90-letiyu akad. V.A. Il’ina (Proc. Int. Conf. “Modern Methods of the Theory of Boundary Value Problems. Pontryagin Readings—XXIX,” Dedicated 90th Anniv. Acad. V.A. Il’in), May 2–6, 2018, Moscow, 2018, pp. 132–133.
5. Rasulov, M.L., Metod konturnogo integrala i ego primenenie k issledovaniyu zadach dlya differentsial’nykh uravnenii (The Contour Integral Method and Its Application to Problems for Differential Equations), Moscow: Nauka, 1964.