Simulation Study on the Self-Organization of Sigmoidal Structure and the Onset of Solar Flares Kusano, K. ; Inoue, S. ; Yamamoto, T. ; Yokoyama, T. ; Sakurai, T. Abstract Publication: Chromospheric and Coronal Magnetic Fields Pub Date: November 2005 Bibcode: 2005ESASP.596E..30K