V. Petrosyan, “DIRICHLET BOUNDARY VALUE PROBLEM IN THE WEIGHTED SPACES $L^{1}(\rho)$”, Proc. YSU A: Phys. Math. Sci., vol. 51, no. 3 (244), pp. 250–254, Dec. 2017, doi: 10.46991/PYSU:A/2017.51.3.250.