Interesting ?! DW. http://cils.ceo.org http://enrm.ceo.org dirkx@technologist.com Dirk.vanGulik@jrc.it +39 332 78 0014 +39 332 78 9549 fax +39 332 78 9185 ISEI/ESBA; The Center For Earth Observation Joint Research Centre of the European Communities, Ispra, Italy