1. A. M. Polubotko, The Dipole-Quadrupole Theory of Surface Enhanced Raman Scattering (Nova Science, New York, 2009).
2. A. M. Polubotko, Preprint No. 1151, FTI (Ioffe Physical-Technical Institute, Academy of Sciences of the Soviet Union, Leningrad, 1987).
3. A. A. Kiselev, Can. J. Phys. 56, 615 (1978).
4. P. A. Braun and A. A. Kiselev, Introduction to the Theory of Molecular Spectra (Leningrad State University, Leningrad, 1983) [in Russian].
5. W.-H. Li, X.-Y. Li, and N.-T. Yu, Chem. Phys. Lett. 327, 153 (2000).