Hartwig Fronthaler Klaus Kollreider Josef Bigün Julian Fiérrez-Aguilar Fernando Alonso-Fernandez Javier Ortega-Garcia Joaquin Gonzalez-Rodriguez Fingerprint Image-Quality Estimation and its Application to Multialgorithm Verification. 331-338 2008 3 IEEE Transactions on Information Forensics and Security 2 http://dx.doi.org/10.1109/TIFS.2008.920725 db/journals/tifs/tifs3.html#FronthalerKBFAOG08