Spectroscopic Identification of Faint White Dwarf Candidates in the Praesepe Open Star Cluster
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1986 ◽
Vol 109
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pp. 697-703
2008 ◽
Vol 329
(8)
◽
pp. 845-848
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1989 ◽
Vol 240
(3)
◽
pp. 551-561
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