Burkhard Fricke i Gerhard Soff, «Dirac-Fock-Slater calculations for the elements Z = 100, fermium, to Z = 173», Atomic Data and Nuclear Data Tables, vol. 19, no 1, gener de 1977, p. 83-95 (DOI10.1016/0092-640X(77)90010-9, Bibcode1977ADNDT..19...83F, en línia)
Burkhard Fricke i Gerhard Soff, «Dirac-Fock-Slater calculations for the elements Z = 100, fermium, to Z = 173», Atomic Data and Nuclear Data Tables, vol. 19, no 1, gener de 1977, p. 83-95 (DOI10.1016/0092-640X(77)90010-9, Bibcode1977ADNDT..19...83F, en línia)
Burkhard Fricke i Gerhard Soff, «Dirac-Fock-Slater calculations for the elements Z = 100, fermium, to Z = 173», Atomic Data and Nuclear Data Tables, vol. 19, no 1, gener de 1977, p. 83-95 (DOI10.1016/0092-640X(77)90010-9, Bibcode1977ADNDT..19...83F, en línia)