2
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4
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7
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8
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11
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12
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14
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15
by Lutz, J. H.
Published in PASP (1984)
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16
by Lutz, J. H.
Published in ApJL (1984)
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17
by Lutz, J. H.
Published in ApJL (1981)
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18
by Lutz, J. H.
Published in ApJL (1977)
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20
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