Shys-Fan Yang-Mao Yung-Kuan Chan Yen-Ping Chu Edge Enhancement Nucleus and Cytoplast Contour Detector of Cervical Smear Images. 353-366 2008 38 IEEE Transactions on Systems, Man, and Cybernetics, Part B 2 http://dx.doi.org/10.1109/TSMCB.2007.912940 db/journals/tsmc/tsmcb38.html#Yang-MaoCC08