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Phys. Rev. ST Accel. Beams 15, 021302 (2012) – Published 2 February 2012
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Phys. Rev. ST Accel. Beams 15, 022001 (2012) – Published 14 February 2012
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Phys. Rev. ST Accel. Beams 15, 024702 (2012) – Published 17 February 2012