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Multiwavelength monitoring of the BL Lac object PKS 2155-304. I. IUE observations. In: Science with the Hubble Space Telescope, pp. 89 - 95 (Eds. Benvenuti, P.; Schreier, E.). Science with the Hubble Space Telescope , Chia Laguna, Sardinia, Italy, June 29, 1992 - July 07, 1992. European Southern Observatory, Garching, Germany (1992)
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Scientific results from the ROSAT all-sky survey. In: Astronomy from Large Databases II - Proceedings, pp. 139 - 141 (Eds. Heck, A.; Murtagh, F.). Astronomy from Large Databases II, Haguenau, France, September 14, 1992 - September 16, 1992. European Southern Observatory, Garching, Germany (1992)
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EXSAS: the ROSAT data analysis system. In: Astronomy from Large Databases II - Proceedings, pp. 519 - 523 (Eds. Heck, A.; Murtagh, F.). Astronomy from Large Databases II, Haguenau, France, September 14, 1992 - September 16, 1992. European Southern Observatory, Garching, Germany (1992)