The Initial Fifteen Months of Flare Observation with the YOHKOH Hard X-Ray Telescope (hxt) Kosugi, T. ; Sakao, T. ; Makishima, K. ; Murakami, T. ; Masuda, S. ; Inda-Koide, M. ; Yaji, K. ; Sawa, M. ; Ogawara, Y. Abstract Publication: X-ray solar physics from Yohkoh Pub Date: 1994 Bibcode: 1994xspy.conf....5K