Chiosi, E. and Vallenari, A. Three clusters of the SMC from ACS/WFC HST archive data: NGC 265, K 29 and NGC 290 and their field population // Astronomy and Astrophysics. — 2007. — Vol. 466. — P. 165-179. — doi:10.1051/0004-6361:20066834. — Bibcode: 2007A&A...466..165C,.
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Chiosi, E. and Vallenari, A. Three clusters of the SMC from ACS/WFC HST archive data: NGC 265, K 29 and NGC 290 and their field population // Astronomy and Astrophysics. — 2007. — Vol. 466. — P. 165-179. — doi:10.1051/0004-6361:20066834. — Bibcode: 2007A&A...466..165C,.