1. Evaluation of a GEM and CAT based detector for radiation therapy beam monitoring;Brahme;Nucl. Instr. and Meth. A,2000
2. GEM;Sauli;Nucl. Instr. and Meth. A,1997
3. M. Wallmark, Operating range of a gas electron multiplier for portal imaging, Master's Thesis, Karolinska Institutet, Stockholm, Sweden, 2000.
4. C. Richter, et al., Microstrip-gas-chambers for the HERA-B experiment, Proceedings of the International Workshop on Micro-pattern Gas Detectors, Orsay, France, 1999, p. 51.
5. F. Sauli, private communication.