1 http://hdl.handle.net/10338.dmlcz/135165 1 Erratum: Second-order approximation of the entropy in nonlinear least-squares estimation http://hdl.handle.net/10338.dmlcz/125232 Erratum: Second-order approximation of the entropy in nonlinear least-squares estimation News http://hdl.handle.net/10338.dmlcz/125231 News Book reviews http://hdl.handle.net/10338.dmlcz/125233 Book reviews A computational method for reduced-order observers in linear systems http://hdl.handle.net/10338.dmlcz/125230 A computational method for reduced-order observers in linear systems