On the Variability of Case 621 and MSB 57

John H. Baumert
1973 Publications of the Astronomical Society of the Pacific  
The unusual SC star Case 621 is identified with the variable VX Aql and the variability of the carbon star MSB 57 is reported.
doi:10.1086/129437 fatcat:ghelg7tj3fa5pfogv5ltzffwom