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Reed, B. Cameron (28 Ιουνίου 2005). «New Estimates of the Solar-Neighborhood Massive-Stars Birthrate and the Galactic Supernova Rate». The Astronomical Journal130 (4): 1652. doi:10.1086/444474. Bibcode: 2005AJ....130.1652R.
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Hubrig, S. και άλλοι. (Ιανουάριος 2009). «New magnetic field measurements of beta Cephei stars and Slowly Pulsating B stars». Astronomische Nachrichten330 (4): 317. doi:10.1002/asna.200811187. Bibcode: 2009AN....330..317H.
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Reed, B. Cameron (28 Ιουνίου 2005). «New Estimates of the Solar-Neighborhood Massive-Stars Birthrate and the Galactic Supernova Rate». The Astronomical Journal130 (4): 1652. doi:10.1086/444474. Bibcode: 2005AJ....130.1652R.
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