@article {Wald1975, title = {Bi2S3 as a high Z material for γ-ray detectors}, journal = {IEEE Transactions on Nuclear Science}, volume = {22}, year = {1975}, month = {Jan-02-1975}, pages = {246 - 250}, issn = {0018-9499}, doi = {10.1109/TNS.1975.4327646}, url = {http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=4327646} }