Barrado y Navascues, D., Stauffer, J.R., & Jayawardhana, R. (2002). «Spectroscopy of Very Low Mass Stars and Brown Dwarfs in IC 2391: Lithium Depletion and Hα Emission». Astrophysical Journal614 (1): 386–397. doi:10.1086/423485. Bibcode: 2004ApJ...614..386B.
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Barrado y Navascues, D., Stauffer, J.R., & Jayawardhana, R. (2002). «Spectroscopy of Very Low Mass Stars and Brown Dwarfs in IC 2391: Lithium Depletion and Hα Emission». Astrophysical Journal614 (1): 386–397. doi:10.1086/423485. Bibcode: 2004ApJ...614..386B.