1 P.G. Burke, W.B. Eissner, D.G. Hummer, and I.C. Percival, Atoms in Astrophysics, 1st ed. (Plenum, New York, NY USA, 1983).
1 P.G. Burke, W.B. Eissner, D.G. Hummer, I.C. Percival, and D.E. Osterbrock, Physics Today 36, (1983).
1 D.G. Hummer, K.A. Berrington, W.B. Eissner, A.K. Pradhan, H.E. Saraph, and J.A. Tully, Astronomy and Astrophysics 279, (1993).