@Misc{DanielPonsa1999,
author="Daniel Ponsa
and A.F. Sole
and Antonio Lopez
and Cristina Ca{\~n}ero
and Petia Radeva
and Jordi Vitria",
title="Regularized EM",
year="1999",
optnote="invisible;ADAS;OR;MILAB;MV",
optnote="exported from refbase (http://refbase.cvc.uab.es/show.php?record=4), last updated on Mon, 23 Jul 2012 17:18:09 +0200"
}