Yu. I. Krutin', Yu. A. Tuchkin, V. P. Shestopalov, “Regularization of a boundary value problem of diffraction by a semi-transparent grating of bars of arbitrary cross-section with Dirichlet boundary condition”, Zh. Vychisl. Mat. Mat. Fiz., 31:6 (1991), 864–876; U.S.S.R. Comput. Math. Math. Phys., 31:6 (1991), 60–69
