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- [4] Sensitive observations of radio recombination lines in Orion and W51: the data and detection of systematic recombination line blueshifts proportional to impact broadening Astrophysics and Space Science, 2011, 333 : 377 - 388
- [6] Recombination Lines and Molecular Gas from Hypercompact HII regions in W51 A ASTROPHYSICAL JOURNAL, 2020, 899 (02):
- [7] Determination of the primordial helium abundance from radio recombination line observations: New data. The source W51 ASTRONOMY LETTERS-A JOURNAL OF ASTRONOMY AND SPACE ASTROPHYSICS, 2013, 39 (11): : 737 - 745
- [8] Determination of the primordial helium abundance from radio recombination line observations: New data. The source W51 Astronomy Letters, 2013, 39 : 737 - 745
- [10] DETECTION OF IMPACT BROADENING OF A RECOMBINATION LINE IN W51 ASTROPHYSICAL JOURNAL, 1978, 219 (02): : 474 - 476