@INBOOK { FierrezHandbook2008,
author = {Julian Fierrez and Javier Ortega-Garcia},
booktitle = {Handbook of Biometrics},
editor = {A. K. Jain, A. Ross and P.Flynn},
pages = {189-209},
publisher = {Springer},
title = {On-line signature verification},
year = {2008},
}