Evidence for magnetic flux cancelation leading to an ejective solar eruption observed by Hinode, TRACE, STEREO, and SoHO/MDIA. C. Sterling, C. Chifor, H. E. Mason, R. L. Moore and P. R. YoungA&A, 521 (2010) A49DOI: https://doi.org/10.1051/0004-6361/201014006