Dynamical Collapse in W51 Massive Cores: CS(3-2) and CHCN ObservationsDOI: info:10.1086/305243v. 494636
Zhang, Qizhou, Ho, Paul T. P., and Ohashi, Nagayoshi. 1998. "Dynamical Collapse in W51 Massive Cores: CS(3-2) and CH3CN Observations." The Astrophysical Journal, 494 636. https://doi.org/10.1086/305243.