B. P. Schmidt, R. P. Kirshner, R. G. Eastman, R. Grashuis, I. dell'Antonio, N. Caldwell, C. Foltz, J. P. Huchra, A. A. E. Milone (1993). ”The unusual supernova SN1993J in the galaxy M81”. Nature 364 (6438): sid. 600–602. doi:10.1038/364600a0. Bibcode: 1993Natur.364..600S.
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J. Ripero, F. Garcia, D. Rodriguez, P. Pujol, A. V. Filippenko, R. R. Treffers, Y. Paik, M. Davis, D. Schlegel, F. D. A. Hartwick, D. D. Balam, D. Zurek, R. M. Robb, P. Garnavich, B. A. Hong; Garcia; Rodriguez; Pujol; Filippenko; Treffers; Paik; Davis; et al. (1993). ”Supernova 1993J in NGC 3031”. IAU Circular 5731: sid. 1. Bibcode: 1993IAUC.5731....1R.
B. P. Schmidt, R. P. Kirshner, R. G. Eastman, R. Grashuis, I. dell'Antonio, N. Caldwell, C. Foltz, J. P. Huchra, A. A. E. Milone (1993). ”The unusual supernova SN1993J in the galaxy M81”. Nature 364 (6438): sid. 600–602. doi:10.1038/364600a0. Bibcode: 1993Natur.364..600S.
