An Observational Determination of the Proton to Electron Mass Ratio in the Early Universe
Published in The Astrophysical Journal, 2009
Recommended citation: Thompson, R. I., Bechtold, J., Black, J. H., et al. (2009). "An Observational Determination of the Proton to Electron Mass Ratio in the Early Universe." The Astrophysical Journal, 703, 1648-1662.
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