@TechReport{AntonioLopez1997,
author="Antonio Lopez
and Joan Serrat",
title="Ridge/Valley-like structures: Creases, separatrices and drainage patterns",
year="1997",
optnote="ADAS",
optnote="exported from refbase (http://refbase.cvc.uab.es/show.php?record=524), last updated on Thu, 30 Jun 2011 12:03:06 +0200"
}