Laurent Saroul Olivier Bernard Didier Vray Denis Friboulet Prostate segmentation in echographic images: A variational approach using deformable super-ellipse and rayleigh distribution. 129-132 2008 ISBI http://dx.doi.org/10.1109/ISBI.2008.4540949 conf/isbi/2008 db/conf/isbi/isbi2008.html#SaroulBVF08