Dual-star photometer at the Tallinn ObservatoryKalv, Peep; Harvig, Voldemar; Aas, Toomas; Pustõlnik, IzoldBaltic astronomy2003 / p. 639-641 Modeling the irradiated atmospheres of unevolved companions in pre-cataclysmic binariesPustõnski, Vladislav-Venjamin; Pustõlnik, IzoldBaltic astronomy2004 / 1, p. 122-127 : ill https://artiklid.elnet.ee/record=b1016019*est