COMPTEL upper limits on gamma-ray line emission from supernova 1993J.
Journal article published in 1996 by
G.~G Lichti,
A. Iyudin,
K. Bennett,
W. Collmar,
R. Diehl 
,
W. Hermsen,
D. Morris,
J. Ryan,
Schoenfelder,
H. Steinle,
A.~W Strong,
T. van Sant,
C. Winkler
,
W. Hermsen,
D. Morris,
J. Ryan,
Schoenfelder,
H. Steinle,
A.~W Strong,
T. van Sant,
C. Winkler
