Evolution of flare ribbons, electric currents, and quasi-separatrix layers during an X-class flareM. Janvier, A. Savcheva, E. Pariat, S. Tassev, S. Millholland, V. Bommier, P. McCauley, S. McKillop and F. DouganA&A, 591 (2016) A141DOI: https://doi.org/10.1051/0004-6361/201628406