1. V. L. Ermolaev, E. N. Bodunov, E. B. Sveshnikova, and T. A. Shakhverdov, Radiationless Transfer of the Electron Excitation Energy [in Russian], Leningrad (1977).
2. E. N. Bodunov, Opt. Spektr.,34, 420 (1973).
3. V. L. Ermolaev and V. P. Gruzdev, Spectr. Lett.,11, 537–547 (1978).
4. J.-C. Bunzli, In Lanthanide Probes in Life, Chemical and Earth Science. Theory and Practice (eds J.-C. Bunzli and G. R. Choppin), Ch. 7, Elsevier, New York-Amsterdam (1989).
5. G. A. Krestov, Thermodynamics of Ionic Processes in Solutions [in Russian], Leningrad (1984).