author = {F. Alonso-Fernandez and J. Fierrez-Aguilar and J. Ortega-Garcia and J. Gonzalez-Rodriguez},
journal = {IEEE Aerospace and Electronic Systems Magazine},
month = {April},
number = {4},
pages = {3-8},
title = {Secure access system using signature verification over Tablet PC},
volume = {22},
year = {2007},