1. Stone, N.J., Table of Nuclear Magnetic Dipole and Electric Quadrupole Moments, IAEA Report INDC(NDS)-0658, 171 pp. (2014), https://www-nds.iaea.org/publications/indc/indc-nds-0658/
2. Poznan univ. of technology;Dembczyński,2020
3. A life in science;Mitton,2016
4. Atomic energy levels - the rare-earth elements;Martin;Natl Bur Stand,1978
5. Experimental investigations of the hyperfine structure in neutral La: I. Odd parity levels;Furmann;J Phys B,2009