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2013AstL...39..737T - Astron. Lett., 39, 737-745 (2013)
Determination of the primordial helium abundance from radio recombination line observations: New data. The source W51.
TSIVILEV A.P., PARFENOV S.Y., SOBOLEV A.M. and KRASNOV V.V.
Journal keyword(s):
CDS comments: 2013PAZh...39..819T
Simbad objects: 9
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