Kaushik Roy Prabir Bhattacharya Level Set Approaches and Adaptive Asymmetrical SVMs Applied for Nonideal Iris Recognition. 418-428 2009 ICIAR http://dx.doi.org/10.1007/978-3-642-02611-9_42 conf/iciar/2009 db/conf/iciar/iciar2009.html#RoyB09