1. U.S. Bur. Mines Bull.;C. E. Wicks,1963
2. R. Pearse and A. Gaydon, The Identification of Molecular Spectra (Chapman and Hall, London, 1941; Inostrannaya Literatura, Moscow, 1949).
3. K. P. Huber and G. Herzberg, Constants of Diatomic Molecules (Van Nostrand Reinhold, New York, 1979; Mir, Moscow, 1984).
4. Yu. M. Smirnov, Khim. Fiz. 21(3), 3 (2002).
5. Yu. M. Smirnov, Khim. Vys. Energ. 37(3), 163 (2003).