@INPROCEEDINGS {40129, author={L.M. Távora}, doi={10.1117/12.186806}, booktitle={SPIE- International Symposium on Optics, Imaging, and Instrumentation,}, title={A High-Efficiency Hard X-Ray Xenon Gas Proportional Scintillation Counter}, year={1994}, month={July}, volume={}, pages={-} }