On a fractional order calculus model in diffusion weighted breast imaging to differentiate between malignant and benign breast lesions detected on X-ray screening mammography. oleh Sebastian Bickelhaupt, Franziska Steudle, Daniel Paech, Anna Mlynarska, Tristan Anselm Kuder, Wolfgang Lederer, Heidi Daniel, Martin Freitag, Stefan Delorme, Heinz-Peter Schlemmer, Frederik Bernd Laun