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Zsargó, J.; Hillier, D. J.; Georgiev, L. N. (2008). "Axi-symmetric models of B[e] supergiants. I. The effective temperature and mass-loss dependence of the hydrogen and helium ionization structure". Astronomy and Astrophysics. 478 (2): 543. arXiv:0712.0870. Bibcode:2008A&A...478..543Z. doi:10.1051/0004-6361:20078293. S2CID55234776.
Zsargó, J.; Hillier, D. J.; Georgiev, L. N. (2008). "Axi-symmetric models of B[e] supergiants. I. The effective temperature and mass-loss dependence of the hydrogen and helium ionization structure". Astronomy and Astrophysics. 478 (2): 543. arXiv:0712.0870. Bibcode:2008A&A...478..543Z. doi:10.1051/0004-6361:20078293. S2CID55234776.