Bismuth-loaded plastic scintillators for gamma-ray spectroscopy B. L. Rupert, N. J. Cherepy, B. W. Sturm, R. D. Sanner and S. A. Payne EPL, 97 2 (2012) 22002 Published online: 18 January 2012 DOI: 10.1209/0295-5075/97/22002