Christopher Tromans Michael Brady Dominique Van de Sompel Michele Lorenzon Massimo Bazzocchi Chiara Zuiani Progress Toward a Quantitative Scale for Describing Radiodensity in Mammographic Images. 553-560 2008 Digital Mammography / IWDM http://dx.doi.org/10.1007/978-3-540-70538-3_77 conf/mammo/2008 db/conf/mammo/iwdm2008.html#TromansBSLBZ08