Spectral theory of self-adjoint operators in Hilbert space

Spectral theory of differential operators

Nonlinear Problems in Mathematical Physics and Related Topics II

Estimates and Asymptotics for Discrete Spectra of Integral and Differential Equations (Advances in Soviet Mathematics, Vol 7)

Spectral theory

Spectral theory and problems in diffraction

Spectral theory and wave processes

Nonlinear equations and spectral theory