1. A note on ‘Einstein's special relativity beyond the speed of light by James M. Hill and Barry J. Cox’ by Hajnal Andréka, Judit X. Madarász, István Németi, and Gergely Székely Proceedings A Volume 469(2154):20120672 June 8, 2013 ©2013 by The Royal Society

2. Decomposition of Hill–Cox transformations. Hajnal Andréka et al. Proc. R. Soc. A 2013;469:20120672 ©2013 by The Royal Society

3. Illustration for the derivation of (2.3). Hajnal Andréka et al. Proc. R. Soc. A 2013;469:20120672 ©2013 by The Royal Society

4. Illustration for equations (3.2) and (3.3). Hajnal Andréka et al. Proc. R. Soc. A 2013;469:20120672 ©2013 by The Royal Society