de Meijere, Armin; Sokolov, Viktor V.; Yufit, Dmitry S.; Panchenko, Yurii N.; De Mare, George R.; Abramenkov, Alexander V.; Lokshin, Boris V.; Senyavin, Vladimir M.
Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy, 2010 , vol. 75, # 4 p. 1253 - 1260

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