T. Tick, M. Campbell, T. Michel, V. O'Shea, R. Plackett, S. Pospíšil, J. Vallerga, J. Visser: Status of the Timepix MCP-HPD development. Journal of Instrumentation 5(12), C12020-C12020 (2010). doi:10.1088/1748-0221/5/12/C12020