Tammann, G. A.; Loeffler, W.; Schroeder, A. The Galactic supernova rate. The Astrophysical Journal Supplement Series. June 1994, 92 (2): 487–493. Bibcode:1994ApJS...92..487T. doi:10.1086/192002.
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Tammann, G. A.; Loeffler, W.; Schroeder, A. The Galactic supernova rate. The Astrophysical Journal Supplement Series. June 1994, 92 (2): 487–493. Bibcode:1994ApJS...92..487T. doi:10.1086/192002.