1. M. A. Thomson, Nucl. Instrum. Meth. A 611, 25 (2009). arXiv:0907.3577
2. C. Adloff et al. [CALICE collaboration], JINST 5, 05004 (2010). arXiv:1003.2662
3. C. Adloff et al. [CALICE collaboration], JINST 6, 07005 (2011). arXiv:1105.3417
4. The ILC TDR. Vol.4: Detectors, Ed. by T. Behnke et al. (2013). arXiv:1306.6329
5. F. Simon and C. Soldner, Nucl. Instrum. Meth. A 620, 196 (2010). arXiv:1001.4665