1. R. Keane et al., in Proceedings of BIW2012, (Newport News, 2012), p. 47
2. P. Leban, D. Tinta and C. Pradervand, in Proceedings of IPAC10, (Kyoto, 2010), p. 1077
3. N. Hubert et al., in Proceedings of IBIC2014, (Monterey, 2014), p. 687
4. C. H. Huang et al., in Proceedings of IBIC2017, (Grand Rapids, 2017), p. 217
5. A. Kosicek and P. Leban, in Proceedings of ICALEPCS2009, (Kobe, 2009), p. 797