1. The principle of limiting absorption;Eidus;Mat. Sb.,1962
2. The principle of limiting absorption
3. The principle of limit amplitude;Eidus;Uspekhi Mat. Nauk,1969
4. THE PRINCIPLE OF LIMIT AMPLITUDE
5. The eigenvalues of Δu + λu = 0 when the boundary conditions are given on semi-infinite domains;Jones,1953