1.
E. Karadzhov G. Uniform asymptotics of the spectral function for perturbed harmonic oscillator and equiconvergence of series with respect to the eigenfunctions. Ann. Sofia Univ. Fac. Math. and Inf. [Internet]. 1992 Dec. 12 [cited 2024 Dec. 5];83(1):51-65. Available from: https://stipendii.uni-sofia.bg/index.php/fmi/article/view/485