1. Antonio, P.L., Xavier, M., Caldas, L.V.E., 2012. Preliminary tests of a commercial extrapolation chamber for utilization as a beta radiation standard system. In: Proceedings of the Proteção 2012 – Third Congress on Radioprotection of the Countries and Communities of Portuguese Language, 20–23 November, Lisbon, Portugal.
2. Determination of transmission factors in tissue using a standard extrapolation chamber;Antonio;Radiat. Phys. Chem.,2013
3. Direct comparison of extrapolation chamber measurements of the absorbed dose rate for beta radiation between PTB (Germany) and VNIIM (Russia);Behrens;Metrologia,2011
4. Review of extrapolation chamber measurements of beta rays and low energy X rays;Böhm;Radiat. Prot. Dosim.,1986
5. Böhm, J., 1986b. The National Primary Standard of the PTB for realizing the unit of the absorbed dose rate to tissue for beta radiation. Physikalisch-Technische Bundesanstalt, PTB-Dos-13: Braunschwieg, Germany.