When a Standard Candle Flickers: Hard X-ray Variations in the Crab Nebula
Proceedings article published in 2015 by
C. Wilson-Hodge,
M.~L Cherry,
G.~L Case,
W.~H Baumgartner,
E. Beklen,
N.~P Bhat,
M.~S Briggs,
R. Buehler,
A. Camero-Arranz,
Connaughton,
R. Diehl 
,
M.~H Finger,
N. Gehrels,
J. Greiner,
F. Harrison
and other authors.
,
M.~H Finger,
N. Gehrels,
J. Greiner,
F. Harrison
and other authors.
