Robuta

https://www.aanda.org/articles/aa/abs/2004/03/aa1567/aa1567.html A catalogue of OB associations in IC 1613 | Astronomy & Astrophysics (A&A) a catalogue ob associations ic 1613 astronomy astrophysics https://www.muni.cz/vyzkum/publikace/1200098 Study of Eclipsing Binary and Multiple Systems in OB Associations. II. The Cygnus OB Region: V443... https://www.aanda.org/articles/aa/abs/2015/05/aa21985-13/aa21985-13.html A spectroscopic investigation of the O-type star population in four Cygnus OB associations - II....