Hummel, W., Appenzeller, I., Seifert, W., & Stahl, O. (2001). Hα emission line spectroscopy in NGC 330: On the hybrid model for global oscillations in Be star circumstellar disks. Astronomy and astrophysics, 371, . https://doi.org/10.1051/0004-6361:20010386
Chicago Style (17th ed.) CitationHummel, Wolfgang, Immo Appenzeller, Walter Seifert, and Otmar Stahl. "Hα Emission Line Spectroscopy in NGC 330: On the Hybrid Model for Global Oscillations in Be Star Circumstellar Disks." Astronomy and Astrophysics 371 (2001). https://doi.org/10.1051/0004-6361:20010386.
MLA (9th ed.) CitationHummel, Wolfgang, et al. "Hα Emission Line Spectroscopy in NGC 330: On the Hybrid Model for Global Oscillations in Be Star Circumstellar Disks." Astronomy and Astrophysics, vol. 371, 2001, https://doi.org/10.1051/0004-6361:20010386.