1. V. A. Kurnaev et al., Phys. Atomic Nucl., 82, No. 10, 1 (2019).
2. V. A. Kurnaev et al., Vestnik SRNU MEPHI, 8, No. 6, 491 (2019).
3. NIST Atomic Spectra Database (version 4.0), Y. Ralchenko et al. https://physics.nist.gov/PhysRefData/ASD/Html/verhist.shtml.
4. R. Vizie, F. Ochsenbein, et al., http://vizier.u-strasbg.fr.
5. NIFS DATABASE. http://dbshino.nifs.ac.jp.