Aubert, B. Measurement of the Branching Fraction and Photon Energy Moments of B to Xs gamma and A_cp (B to X_{s+d} gamma), article, September 26, 2006; (https://digital.library.unt.edu/ark:/67531/metadc873424/m1/1/: accessed December 13, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .