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Raul E. Puebla; D. John Hillier; Janos Zsargó; David H. Cohen; Maurice A. Leutenegger (2015). “X-ray, UV and optical analysis of supergiants: ε Ori”. 《Monthly Notices of the Royal Astronomical Society》 456 (3): 2907. arXiv:1511.09365. Bibcode:2016MNRAS.456.2907P. doi:10.1093/mnras/stv2783.
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