Supernovae and Californium 254 Baade, W. ; Burbidge, G. R. ; Hoyle, F. ; Burbidge, E. M. ; Christy, R. F. ; Fowler, W. A. Abstract Publication: Publications of the Astronomical Society of the Pacific Pub Date: August 1956 DOI: 10.1086/126941 Bibcode: 1956PASP...68..296B