@TechReport{A.Martinez1998,
author="A. Martinez
and Robert Benavente",
title="The AR face database",
year="1998",
optnote="CIC",
optnote="exported from refbase (http://refbase.cvc.uab.es/show.php?record=534), last updated on Thu, 30 Jun 2011 12:06:20 +0200"
}