Gutermuth, R. A. (2008). «The Spitzer Gould Belt Survey of Large Nearby Interstellar Clouds: Discovery of a Dense Embedded Cluster in the Serpens-Aquila Rift». Astrophysical Journal673 (2): L151-L154. Bibcode:2008ApJ...673L.151G. doi:10.1086/528710.
Getman, K. V. (2014). «Age Gradients in the Stellar Populations of Massive Star Forming Regions Based on a New Stellar Chronometer». Astrophysical Journal787 (2): 108. Bibcode:2014ApJ...787..108G. doi:10.1088/0004-637X/787/2/108.
Küpper, A. H. W. (2011). «Mass segregation and fractal substructure in young massive clusters - I. The McLuster code and method calibration». Monthly Notices of the Royal Astronomical Society417 (3): 2300-2317. Bibcode:2011MNRAS.417.2300K. doi:10.1111/j.1365-2966.2011.19412.x.
Feigelson, E. D. (2013). «Overview of the Massive Young Star-Forming Complex Study in Infrared and X-Ray (MYStIX) Project». Astrophysical Journal Supplement209 (2): 26. Bibcode:2013ApJS..209...26F. doi:10.1088/0067-0049/209/2/26.
André, Ph. (2010). «From filamentary clouds to prestellar cores to the stellar IMF: Initial highlights from the Herschel Gould Belt Survey». Astronomy & Astrophysics518: 102. Bibcode:2010A&A...518L.102A. doi:10.1051/0004-6361/201014666.
Rodney, S. A.; Reipurth, B. (2008). «The W40 Cloud Complex». En Reipurth, B., ed. Handbook of Star Forming Regions, Volume II: The Southern Sky ASP Monograph Publications5. p. 43. ISBN978-1-58381-670-7.
Straižys, V. (1996). «Interstellar extinction in the area of the Serpens Cauda molecular cloud». Baltic Astronomy5 (1): 125-147. Bibcode:1996BaltA...5..125S.
Gutermuth, R. A. (2008). «The Spitzer Gould Belt Survey of Large Nearby Interstellar Clouds: Discovery of a Dense Embedded Cluster in the Serpens-Aquila Rift». Astrophysical Journal673 (2): L151-L154. Bibcode:2008ApJ...673L.151G. doi:10.1086/528710.
Getman, K. V. (2014). «Age Gradients in the Stellar Populations of Massive Star Forming Regions Based on a New Stellar Chronometer». Astrophysical Journal787 (2): 108. Bibcode:2014ApJ...787..108G. doi:10.1088/0004-637X/787/2/108.
Küpper, A. H. W. (2011). «Mass segregation and fractal substructure in young massive clusters - I. The McLuster code and method calibration». Monthly Notices of the Royal Astronomical Society417 (3): 2300-2317. Bibcode:2011MNRAS.417.2300K. doi:10.1111/j.1365-2966.2011.19412.x.
Feigelson, E. D. (2013). «Overview of the Massive Young Star-Forming Complex Study in Infrared and X-Ray (MYStIX) Project». Astrophysical Journal Supplement209 (2): 26. Bibcode:2013ApJS..209...26F. doi:10.1088/0067-0049/209/2/26.
André, Ph. (2010). «From filamentary clouds to prestellar cores to the stellar IMF: Initial highlights from the Herschel Gould Belt Survey». Astronomy & Astrophysics518: 102. Bibcode:2010A&A...518L.102A. doi:10.1051/0004-6361/201014666.