@techreport{
LenBab:06-004,
author={{\relax Zs}. Lendek and R. Babu{\v{s}}ka and B. {D}e Schutter},
title={State estimation under uncertainty: A survey},
number={06-004},
institution={Delft Center for Systems and Control, Delft University of
Technology},
address={Delft, The Netherlands},
month=feb,
year={2006}
}