Trigonometric Parallaxes of Four Star-forming Regions in the Distant Inner Galaxy2021DOI: info:10.3847/1538-4365/abd8cfThe Astrophysical Journal Supplement Seriesv. 253 1 1
Xu, Y., Bian, S. B., Reid, M. J., Li, J. J., Menten, K. M., Dame, T. M., Zhang, B., Brunthaler, A., Wu, Y. W., Moscadelli, L., Wu, G., and Zheng, X. W. 2021. "Trigonometric Parallaxes of Four Star-forming Regions in the Distant Inner Galaxy." The Astrophysical Journal Supplement Series 253: 1. https://doi.org/10.3847/1538-4365/abd8cf