A Search for Vector Magnetic Field Variations Associated with the M-Class Flares of 1991 June 10 in AR 6659 Hagyard, M. J. ; West, E. A. ; Smith, J. E. ; Venkatakrishnan, P. Abstract Publication: AAS/Solar Physics Division Meeting #26 Pub Date: March 1995 Bibcode: 1995SPD....26..304H