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Lis, Dariusz C.; Goldsmith, Paul F. Modeling of the continuum and molecular line emission from the Sagittarius B2 molecular cloud. Astrophysical Journal, Part 1. 1990, 356: 195–210. Bibcode:1990ApJ...356..195L. doi:10.1086/168830.
S. E. Cummins; R. A. Linke; P. Thaddeus. A survey of the millimeter-wave spectrum of Sagittarius B2. Astrophysical Journal Supplement Series. 1986, 60: 819–878. Bibcode:1986ApJS...60..819C. doi:10.1086/191102.
Goldsmith, Paul F.; Lis, Dariusz C.; Hills, Richard; Lasenby, Joan. High angular resolution submillimeter observations of Sagittarius B2. Astrophysical Journal. 1990, 350: 186–194. Bibcode:1990ApJ...350..186G. doi:10.1086/168372.
Lis, Dariusz C.; Goldsmith, Paul F. Modeling of the continuum and molecular line emission from the Sagittarius B2 molecular cloud. Astrophysical Journal, Part 1. 1990, 356: 195–210. Bibcode:1990ApJ...356..195L. doi:10.1086/168830.
de Vicente, P.; Martin-Pintado, J.; Wilson, T. L. A Hot Ring in the SGR B2 Molecular Cloud. Proceedings Astronomical Society of the Pacific Conference Series. La Serena, Chile: Astronomical Society of the Pacific.: 64–67. March 10–15, 1996. Bibcode:1996ASPC..102...64D.
S. E. Cummins; R. A. Linke; P. Thaddeus. A survey of the millimeter-wave spectrum of Sagittarius B2. Astrophysical Journal Supplement Series. 1986, 60: 819–878. Bibcode:1986ApJS...60..819C. doi:10.1086/191102.