PATEL, Nimesh A.; GOLDSMITH, Paul F.; HEYER, Mark H.; SNELL, Ronald L.; PRATAP, Preethi. Origin and Evolution of the Cepheus Bubble. S. 241–253. Astrophysical Journal [online]. Listopad 1998 [cit. 2020-01-06]. Roč. 507, s. 241–253. Dostupné online. doi:10.1086/306305. Bibcode1998ApJ...507..241P. (anglicky)
COLLINDER, Per. On Structural Properties of Open Galactic Clusters and their Spatial Distribution. Catalog of Open Galactic Clusters. S. B1-B46. Annals of the Observatory of Lund [online]. 1931 [cit. 2020-01-06]. Čís. 2, s. B1-B46. Dostupné online. Bibcode1931AnLun...2....1C. (anglicky)
PATEL, Nimesh A.; GOLDSMITH, Paul F.; HEYER, Mark H.; SNELL, Ronald L.; PRATAP, Preethi. Origin and Evolution of the Cepheus Bubble. S. 241–253. Astrophysical Journal [online]. Listopad 1998 [cit. 2020-01-06]. Roč. 507, s. 241–253. Dostupné online. doi:10.1086/306305. Bibcode1998ApJ...507..241P. (anglicky)
COLLINDER, Per. On Structural Properties of Open Galactic Clusters and their Spatial Distribution. Catalog of Open Galactic Clusters. S. B1-B46. Annals of the Observatory of Lund [online]. 1931 [cit. 2020-01-06]. Čís. 2, s. B1-B46. Dostupné online. Bibcode1931AnLun...2....1C. (anglicky)
PATEL, Nimesh A.; GOLDSMITH, Paul F.; HEYER, Mark H.; SNELL, Ronald L.; PRATAP, Preethi. Origin and Evolution of the Cepheus Bubble. S. 241–253. Astrophysical Journal [online]. Listopad 1998 [cit. 2020-01-06]. Roč. 507, s. 241–253. Dostupné online. doi:10.1086/306305. Bibcode1998ApJ...507..241P. (anglicky)