Charlotte Froese Fischer, Jolanta B. Lagowski et S.H. Vosko, « Ground States of Ca− and Sc− from Two Theoretical Points of View », Physical Review Letters, vol. 59, , p. 2263–2266 (DOI10.1103/PhysRevLett.59.2263, Bibcode1987PhRvL..59.2263F)
C. Froese Fischer et G. Tachiev, « Breit-Pauli energy levels, lifetimes, and transition probabilities for the beryllium-like to neon-like sequences », Atomic Data and Nuclear Data Tables, vol. 87, , p. 1–184 (DOI10.1016/j.adt.2004.02.001, Bibcode2004ADNDT..87....1F).
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Charlotte Froese Fischer, Jolanta B. Lagowski et S.H. Vosko, « Ground States of Ca− and Sc− from Two Theoretical Points of View », Physical Review Letters, vol. 59, , p. 2263–2266 (DOI10.1103/PhysRevLett.59.2263, Bibcode1987PhRvL..59.2263F)
C. Froese Fischer et G. Tachiev, « Breit-Pauli energy levels, lifetimes, and transition probabilities for the beryllium-like to neon-like sequences », Atomic Data and Nuclear Data Tables, vol. 87, , p. 1–184 (DOI10.1016/j.adt.2004.02.001, Bibcode2004ADNDT..87....1F).