Kharchenko, N. V.; Piskunov, A. E.; Röser, S.; Schilbach, E.; Scholz, R.-D. (2005), ”Astrophysical parameters of Galactic open clusters”, Astronomy and Astrophysics 438 (3): 1163–1173, doi:10.1051/0004-6361:20042523, Bibcode: 2005A&A...438.1163K.
Joshi, Y. C.; Dambis, A. K.; Pandey, A. K.; Joshi, S. (October 2016), ”Study of open clusters within 1.8 kpc and understanding the Galactic structure”, Astronomy & Astrophysics 593: 13, doi:10.1051/0004-6361/201628944, A116, Bibcode: 2016A&A...593A.116J.
Piskunov, A. E.; Schilbach, E.; Kharchenko, N. V.; Röser, S.; Scholz, R.-D. (January 2008), ”Tidal radii and masses of open clusters”, Astronomy and Astrophysics 477 (1): 165–172, doi:10.1051/0004-6361:20078525, Bibcode: 2008A&A...477..165P.
McSwain, M. Virginia; Gies, Douglas R. (November 2005), ”The Evolutionary Status of Be Stars: Results from a Photometric Study of Southern Open Clusters”, The Astrophysical Journal Supplement Series 161 (1): 118–146, doi:10.1086/432757, Bibcode: 2005ApJS..161..118M.
Eggenberger, P.; Meynet, G.; Maeder, A. (May 2002), ”The blue to red supergiant ratio in young clusters at various metallicities”, Astronomy and Astrophysics 386 (2): 576–582, doi:10.1051/0004-6361:20020262, Bibcode: 2002A&A...386..576E.
Kharchenko, N. V.; Piskunov, A. E.; Röser, S.; Schilbach, E.; Scholz, R.-D. (2005), ”Astrophysical parameters of Galactic open clusters”, Astronomy and Astrophysics 438 (3): 1163–1173, doi:10.1051/0004-6361:20042523, Bibcode: 2005A&A...438.1163K.
Lindoff, U. (December 1971), ”The open clusters NGC 6613 (M 18) and NGC 6716”, Astronomy and Astrophysics 15: 439–449, Bibcode: 1971A&A....15..439L.
Joshi, Y. C.; Dambis, A. K.; Pandey, A. K.; Joshi, S. (October 2016), ”Study of open clusters within 1.8 kpc and understanding the Galactic structure”, Astronomy & Astrophysics 593: 13, doi:10.1051/0004-6361/201628944, A116, Bibcode: 2016A&A...593A.116J.
Piskunov, A. E.; Schilbach, E.; Kharchenko, N. V.; Röser, S.; Scholz, R.-D. (January 2008), ”Tidal radii and masses of open clusters”, Astronomy and Astrophysics 477 (1): 165–172, doi:10.1051/0004-6361:20078525, Bibcode: 2008A&A...477..165P.
McSwain, M. Virginia; Gies, Douglas R. (November 2005), ”The Evolutionary Status of Be Stars: Results from a Photometric Study of Southern Open Clusters”, The Astrophysical Journal Supplement Series 161 (1): 118–146, doi:10.1086/432757, Bibcode: 2005ApJS..161..118M.
Eggenberger, P.; Meynet, G.; Maeder, A. (May 2002), ”The blue to red supergiant ratio in young clusters at various metallicities”, Astronomy and Astrophysics 386 (2): 576–582, doi:10.1051/0004-6361:20020262, Bibcode: 2002A&A...386..576E.