Statistics of intraday variability in extragalactic radio sources.
Journal article published in 1992 by
A. Quirrenbach,
A. Witzel,
T. P. Krichbaum,
C. A. Hummel 
,
R. Wegner,
C. J. Scalinski,
M. Ott,
A. Alberdi,
M. Rioja
,
R. Wegner,
C. J. Scalinski,
M. Ott,
A. Alberdi,
M. Rioja
