Michael Moeller, Heidrun Wabnitz, Andreas Kummrow, Dirk Grosenick, Adam Liebert, Bernhard Wassermann, Rainer Macdonald, Herbert Rinneberg, "Four-wavelength multichannel time-resolved optical mammograph," Proc. SPIE 5138, Photon Migration and Diffuse-Light Imaging, (15 October 2003);