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1999AN....320..317T - Astron. Nachr., 320, 317 (1999)
X-ray rapid variability of MKN 421.
TREVES A., ZHANG Y.H., TAVECCHIO F., CELOTTI A., CHIAPPETTI L., FOSSATI G., GHISELLINI G., MARASCHI L., PIAN E. and TAGLIAFERRI G.
Journal keyword(s):
Simbad objects: 2
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