HABRMAN, Petr. Directional Geiger-Müller detector with improved response to gamma radiation.
Journal of Instrumentation. 2019, vol. 14, September, p. "P09018-0,1"-"P09018-6", 7 pp. ISSN 1748-0221. Available from: https://dx.doi.org/10.1088/1748-0221/14/09/P09018.