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1987A&A...182L...1D - Astronomy and Astrophysics, volume 182, L1-4 (1987)
Hard X-ray observations of the quasar 3C 273.
DAMLE S.V., KUNTE P.K., NARANAN S., SREEKANTAN B.V. and VENKATESAN D.
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Simbad objects: 1
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