[1] K. G. Dyall, I. P. Grant, C. T. Johson, F. A. Parpia, and E. P. Plummer, Computer Phys. Commun. 55, 425 (1989).

[2] J. F. Cornwell, Group Theory in Physics (Academic Press, London, 1994).

[3] Z. Zhu, Atomic and Molecular Reaction Statics (in Chinese) (Science Press, Beijing, 2007).

[4] W. Luding and C. Falter, Symmetries in Physics (Springer, Heidelberg, 1996).

[5] M. Tinkham, Group Theory and Quantum Mechanics (McGraw-Hill, New York, 1964).

[6] T. Saue, K. Fagri, T. Helgaker, and O. Gropen, Mol. Phys. 91, 937 (1997).

[7] T. Saue and H. J. A. Jensen, J. Chem. Phys. 111, 6211 (1999).

[8] Z. H. Zhu, Sci. China Ser. G Phys. Mech. Astron. 50, 581 (2007).

[9] M. E. Rose, Relativistic Electron Theory (Wiley, New York, 1961).

[10] T. Saue and H. J. A. Jensen, J. Chem. Phys. 118, 522 (2003).

[11] H. Charlie, Introduction to Mathematical Physics (Prentice Hall, Englewood Cliffs, 1976).

[12] L. G. M. de Macedo, J. R. Sambrano, A. R. de Souza, and A. C. Borin, Chem. Phys. Lett. 440, 367 (2007).

[13] K. Balasubramanian and S. P. Kenneth, J. Phys. Chem. 87, 2087 (1983).

[14] J. C. Berengut, V. V. Flambaum, and M. G. Kozlov, Phys. Rev. A 73, 012504 (2006).

[15] T. Saue and T. Helgaker, J. Comput. Chem. 23, 814 (2002).

[16] J. Bieron, C. F. Fischer, P. Indelicato, P. Jonsson, and P. Pyykko, Phys. Rev. A 79, 052502 (2009).

[17] T. Fleig and L. Visscher, Chem. Phys. 311, 113 (2005).

[18] H. J. A. Jensen, T. Saue, and L. Visscher, "DIRAC, a relativistic ab initio electronic structure program, release DIRAC08" (2008).

[19] S. Yamamoto and S. Saito, J. Astrophys. 370, L103 (1991).

[20] C. E. Moore, Natl. Stand. Ref. Data Ser. Natl. Bur. Stand. 3 (1975) Sect.5.

[21] D. C. Morton, J. Astrophys. Suppl. Ser. 149, 205 (2003).