BM Cas a long period eclipsibinary with a supergiant and common envelope
Kalv, Peep
;
Harvig, Voldemar
;
Pustõlnik, Izold
Zdenek Kopal's Binary Star Legacy
2004
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[4] p
https://www.researchgate.net/publication/251265329_BM_Cas_A_Long-Period_Eclipsing_Binary_with_a_Supergiant_and_a_Common_Envelope