Optical Spectra of SN 1993J During the First Week
Journal article published in 1993 by
R. A. Finn 
,
R. A. Fesen,
J. D. Darling,
J. R. Thorstensen,
G. Worthey
,
R. A. Fesen,
J. D. Darling,
J. R. Thorstensen,
G. Worthey
