Tr. Mosk. Mat. Obs., 1957 Volume 6,Pages 481–485(Mi mmo67)
Letters to the Editor
Correction to the article "On the asymptotic behavior of a spectral function and expansion in eigenfunctions of the equation $\Delta u+\{\lambda-q(x_1,x_2,x_3)\}u=0$" (Trudy Mosk. Mat. O-va 4 (1955))