Simultaneous Radio and Hard X-ray Observations by PHOENIX/Zurich and HXRBS/SMM during Max'91 (June 1989) Aschwanden, M. J. ; Dennis, B. R. ; Benz, A. O. Abstract Publication: Max 1991/SMM Solar Flares: Observations and Theory Pub Date: 1991 Bibcode: 1991max..conf..234A