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3. G. Travish et al., in these proceedings.
4. J. McNeur, G. Travish, H. Yin, and R. B. Yoder, in Proceedings of IPAC 2012 (IEEE, 2012), pp. 2732–2734.
5. C. K. Ng et al., Phys. Rev. ST-AB 13, 121301 (2010).