537
Glushkova E.V., Zabolotskikh M.V., Koposov S.E., Spiridonova O.I., Vlasyuk V.V., Rastorguev A.S.
(2010) Astron. Lett. 36, 14
Photometry of the poorly studied galactic open star clusters King 13, King 18, King 19, King 20, NGC 136, and NGC 7245
2010AstL...36...14G