Popov G S

Publications in Math-Net.Ru

1. Asymptotic expansion of the spectral function for second-order elliptic operators in $\mathbb{R}^n$
   
   Funktsional. Anal. i Prilozhen., 17:3 (1983),  37–45
2. A complete asymptotic expansion of the spectral function for second-order elliptic operators in $\mathbb R^n$
   
   Uspekhi Mat. Nauk, 38:1(229) (1983),  187–188