@ARTICLE {17658,
author={M.S. Nixon and P.L. Correia and K.N. Nasrollahi and T.B.M. Moeslund and A.H. Hadid and M.  Tistarelli},
doi={10.1016/j.patrec.2015.08.006},
journal={Pattern Recognition Letters},
title={On soft biometrics},
year={2015},
month={December},
volume={68},
number={2},
pages={218-230},
ISSN={0167-8655}
}