1. Ferguson, D. E. (1978). Proceedings Commemorating the 25th Anniversary of Elements 99 and 100, Seaborg, G. T., ed., LBL 7701 Report, National Tecnical Information Service, Springville, Virginia, p. 35.
2. Sensitive Spark Lines of Einsteinium*
3. Conway, J. G. (1978). In Ref. 1, p. 69.
4. Hyperfine structure in the ^253Es emission spectrum, III: Extension of the line list, levels of Es i and Es ii, nuclear magnetic-dipole and quadrupole moments*
5. Energies of the Electronic Configurations of the Lanthanide and Actinide Neutral Atoms