On the nature of asymmetry of the light curves of BM Cas - a long period eclipsing supergiant binaryKalv, Peep; Harvig, Voldemar; Aas, Toomas; Pustõlnik, IzoldVariable stars - 20052007 / p. 61-64https://ui.adsabs.harvard.edu/abs/2005OAP....18...61K/abstract