Collinder 121

Number of stars per data source

	Reference    5 :    1 star
	Reference   10 :    1 star
	Reference   11 :   10 stars

5: Maitzen H.M.; (1981) Astron. Astrophys. 95, 213; Photometric evidence for the appearance of the Lambda 5200 flux depression in helium-weak stars; 1981A&A....95..213M
10: Maitzen H.M., Vogt N.; (1983) Astron. Astrophys. 123, 48; Photoelectric photometry of peculiar and related stars; 1983A&A...123...48M
11: Maitzen H.M., Wood H.J.; (1983) Astron. Astrophys. 126, 80; Photometric search for Ap-stars in open clusters; 1983A&A...126...80M