Froese Fischer, Charlotte; Lagowski, Jolanta B.; Vosko, S.H. (1987), Ground States of Ca− and Sc − from Two Theoretical Points of View, Physical Review Letters, 59: 2263—2266, Bibcode:1987PhRvL..59.2263F, doi:10.1103/PhysRevLett.59.2263
Froese Fischer, C.; Tachiev, G. (2004). Breit-Pauli energy levels, lifetimes, and transition probabilities for the beryllium-like to neon-like sequences. Atomic Data and Nuclear Data Tables. 87: 1—184. Bibcode:2004ADNDT..87....1F. doi:10.1016/j.adt.2004.02.001.
Froese Fischer, C.; Tachiev, G.; Irimia, A. (2006), Relativistic energy levels, lifetimes, and transition probablilities of the sodium-like to argon-like sequences, Atomic Data and Nuclear Data Tables, 92: 607—812, Bibcode:2006ADNDT..92..607F, doi:10.1016/j.adt.2006.03.001.
Froese Fischer, Charlotte; Lagowski, Jolanta B.; Vosko, S.H. (1987), Ground States of Ca− and Sc − from Two Theoretical Points of View, Physical Review Letters, 59: 2263—2266, Bibcode:1987PhRvL..59.2263F, doi:10.1103/PhysRevLett.59.2263
Froese Fischer, C.; Tachiev, G. (2004). Breit-Pauli energy levels, lifetimes, and transition probabilities for the beryllium-like to neon-like sequences. Atomic Data and Nuclear Data Tables. 87: 1—184. Bibcode:2004ADNDT..87....1F. doi:10.1016/j.adt.2004.02.001.
Froese Fischer, C.; Tachiev, G.; Irimia, A. (2006), Relativistic energy levels, lifetimes, and transition probablilities of the sodium-like to argon-like sequences, Atomic Data and Nuclear Data Tables, 92: 607—812, Bibcode:2006ADNDT..92..607F, doi:10.1016/j.adt.2006.03.001.